Hey, Just wondering if anyone has any tips for trying to lower oil consumption in a JTS 2.0? Already tried adding moreys oil stabiliser. I don't have a leak and my car isn't blowing it out of the exhaust, it is just chewing up an excessive amount.
Thanks
How much is too much
(Volume vs distance/time)
What oil are you using
sometimes as bad as 2L or so every 1000kms. was using penrite 10w60, now using a higher grade.
JTS = Just Two Stroke
I just used about half litre of 10w60 in a 1000km trip in the JTS. Dropped level about half between min and max mark on dip stick. Yep Just a Two Stroke. I keep watch on it weekly.
Try Penrite 'extra 10' with full zinc, 15-60 viscosity, lowest oil consumption oil i have used in my JTS.
Castrol Edge, uses a bit more 10-60 viscosity, but its a lighter oil.
Mobil 1 5-50, uses a bit more oil, but its better in winter.
All good oils, swings and roundabouts, Colin.
Quote from: colcol on June 12, 2015, 08:30:59 PM
Try Penrite 'extra 10' with full zinc, 15-60 viscosity, lowest oil consumption oil i have used in my JTS.
Castrol Edge, uses a bit more 10-60 viscosity, but its a lighter oil.
Mobil 1 5-50, uses a bit more oil, but its better in winter.
All good oils, swings and roundabouts, Colin.
Col, how come we always end up talking about oil? :o
Because oil is the life blood off our cars and when it runs out, the car dies, and then we can blame the car for being an unreliable Alfa Romeo, would never happen with a Toyota, Colin.
Col, how come we always end up talking about Toyotas? :o
Apparently late model Audi's are very thirsty for oil as well.......
Its because of the Direct Injection and running thin oils for good fuel consumption, Holden Direct Injection alloytech V-6 engines like a drink as well, until they seize up, due to lack of oil, Colin.
If you want to lower the oil consumption forget about the oil - replace the piston rings with a better design.
You can buy a lot of oil for the cost of pulling the motor out, pulling it apart, replacing the piston rings, honing the bore, assembling it and putting it back in the car.
The high pressure direct injectors wash oil off the bores and dilute the sump with fuel, not a good lubricant.
Some Alfa Romeo Specialists are putting in different pistons rings as a cure, Colin.
FYI, on my Just a Two Stroke, did a day's spirited driving (checked - full oil level and forgot to switch off ASR, damn) and then about 1200km of Eastern FWY Grand Prix racing, oil level dropped to the lower indicator mark on the dip stick, topped up with a litre of Castrol Edge 10w60 and a little bit more for prosperity. Mmmm, interesting and worrying in terms of if you miss a check, you could do a motor.
With the current petrol price, might go back to the Disco or drive a Toyota.
Does this model not have an oil level indicator on startup?
Or can't it be trusted?
Checking the oil every week would get annoying, no wonder so many get lunched :)
Unlike BMTroubleyou's, the JTS has a good old fashioned dipstick, that is painted bright yellow, positioned at the front of the motor, don't trust electronic oil level indicators, just check it every week, when you do the coolant level, washer bottle and tyre pressures.
A sudden drop of oil could mean with spirited driving, you could be burning all the oil dilution out of the oil, check it over the next few weeks to see if it drops further.
Checking the oil level every week is not annoying, its called preventative maintenance, seizing an engine is much more annoying, like the newer models, have a litre of oil in the boot, Colin.
Quote from: colcol on June 28, 2015, 08:17:09 PM
Unlike BMTroubleyou's, the JTS has a good old fashioned dipstick, that is painted bright yellow, positioned at the front of the motor, don't trust electronic oil level indicators, just check it every week, when you do the coolant level, washer bottle and tyre pressures.
A sudden drop of oil could mean with spirited driving, you could be burning all the oil dilution out of the oil, check it over the next few weeks to see if it drops further.
Checking the oil level every week is not annoying, its called preventative maintenance, seizing an engine is much more annoying, like the newer models, have a litre of oil in the boot, Colin.
It was a simple question, really didn't need your usual flair of passive aggressive sarcasm.
For what it's worth (and your education), my 156 indicates the oil level via the centre display unit on startup. I had assumed they all did.
What??? Relax.
And anyway, how come when put a line between lines, it always adds another once sent to the forum, answer that.
Wonder if a Toyota Camry has an electronic oil level indicator.
Quote from: Craig_m67 on June 28, 2015, 11:33:44 PM
It was a simple question, really didn't need your usual flair of passive aggressive sarcasm.
Time to check your meds, Craig. Your paranoia is showing.
Let it go,
Let it out,
Let it all unravel,
Let it free
And it will be
A path on which to travel.
(Leunig)
I reckon Colin's 156 would also have an electronic 'oil meter' on startup. My 159 does. Unlike uncle Colcol I don't like to check my oil level manually (but I do have a squiz at tyre pressures, coolant, brake, and power steering fluid levels every time I fill up). The reason I don't like to check my oil level manually is: 1. The electronic readout has never been wrong and 2. The last time I checked to oil level with the dipstick, I pulled it out too hard and somehow managed to 'stretch' the dipstick 'coil of metal' close to where it meets the yellow bit that you pull on. Then again, I am a mechanical incompetent, unlike most of you guys.
Chewing 2l of oil every 1000k's does seem like a lot to me though - Neil seems on the money with his description of JTS. Potsie.
Since I have a small collection of cars 6 including 3 alfas I've become addicted to checking dipsticks (it's particularly annoying to my wife) as I have a few friends and other people I know who have destroyed engines due to not checking oil levels, one being a ferrari 308 gt4, and 2 105 coupes.
Back in the days when Dinosaurs walked the earth, uncle col worked at an engine reconditioner and about 80% of engines that we got to fix were caused by running out of oil or and coolant, and a few times selling a changeover engine and the purchaser not putting oil in it, because if you put oil in an engine and transport it and the engine is stored on its side, the engine sicks up all its oil on the floor / boot / ute / van, Colin.
Col, I don't get why you wouldn't check the oil weekly. I can't understand why people would think that an engine doesn't use any oil between services and there is no need to open the bonnet, regardless of the type of vehicle they drive. It is true that modern cars don't use as much oil as older ones but that does not mean that you don't need to check it. It is it just poor education or a case of "I don't care" until they seize the motor and then they start to care in a big way as it usually costs them a lot of money. :o
I have found that new cars use more oil than old ones, due to thinner oils, back in the olden days, we used 20-30 oil in the winter and 30-40 oil in the summer, now the oils are 5-50, 10-40, 10-60, that is quite thin to get fuel consumption low with low friction and instant oil pressure on startup.
And then there is Direct Injection, with high pressure injectors washing the oil off the bores and very thin pistons rings for low friction wearing out shortly and not scraping the oil off the bores, but letting the oil burn as in Just Two Strokes.
Then the motor seizes and its bloody Alfa Romeo's always breaking down.
Gary, why are we talking about oil again?, Colin.
Quote from: Craig_m67 on June 28, 2015, 11:38:09 AM
Does this model not have an oil level indicator on startup?
Or can't it be trusted?
Checking the oil every week would get annoying, no wonder so many get lunched :)
I don't disagree with anything anybody said, but then that wasn't my question...
My 156 JTS 2002 model does not have an oil level level check on start up, but should, someone said that the previous model the 155 did??.
I don't trust these devices anyway, the 33 had a oil level check on startup, which was variable to say the least!, Colin.
Quote from: colcol on June 30, 2015, 09:41:26 PM
I have found that new cars use more oil than old ones, due to thinner oils, back in the olden days, we used 20-30 oil in the winter and 30-40 oil in the summer, now the oils are 5-50, 10-40, 10-60, that is quite thin to get fuel consumption low with low friction and instant oil pressure on startup.
And then there is Direct Injection, with high pressure injectors washing the oil off the bores and very thin pistons rings for low friction wearing out shortly and not scraping the oil off the bores, but letting the oil burn as in Just Two Strokes.
Then the motor seizes and its bloody Alfa Romeo's always breaking down.
Gary, why are we talking about oil again?, Colin.
That's because we love oil Colin as it is the lifeblood of our engines. ;)
Its not the Camry's that are the problem, its just the leisurely way they are all being driven by the owners.
What did the grey army drive before Camry's???, the Toyota Corona and before that, Austin 1800's, [the land crab], Colin.
Bit of a delayed reply. From what I am aware my JTS does have an electronic indicator but its useless, only ever comes on when im pushing it around a corner. At the moment i am using Penrite 25w-70 to try and lower oil consumption which has helped a bit. The guy at autobarn was extremely surprised when i told him this, he said if it was him he would have gone with the 10w-60 and tried using some additives that are designed for older engines which burn oil etc, what are peoples thoughts on this? would this be a better option? Might just have to try it to see how it works.
Quote from: colcol on July 07, 2015, 08:46:13 PM
Its not the Camry's that are the problem, its just the leisurely way they are all being driven by the owners.
What did the grey army drive before Camry's???, the Toyota Corona and before that, Austin 1800's, [the land crab], Colin.
Col, you are right, you can actually drive a Camry quite hard. I have frightened a few people, I don't think they could believe what they were seeing. Camrys don't have Alfa like handling but they are not bad for what they are. ;)
Hey CD, i am interested about your electronic indicator, i don't think mine has one, but i have been wrong before, you are not talking about a low oil pressure oil light indicator?, if you are pushing through corners and it comes on, your oil might be a bit low.
If the Penrite 25-70 w works ok, then stick with that, as long as the extra drag doesn't effect the fuel consumption too much, Colin.
Interestingly, I walked into a Toyota show room yesterday, not by accident, I thought I was going to be struck by lightning or beaten up.
"Struck by lightning or beaten up", or even worse buy a Camry to replace the 156, the horror, Colin.
dc_cudi, does your Variator make the Diesel clattering when you initially for more than 30 seconds?
Is there oil leaking around the Variator Solenoid?
I ask for good reason.
Baz
sorry for relayed reply but no oil leaks at all, had this verified by the mechanic. If there were then i would surely notice oil leaking given how much im going through.
Hi all, I'm going to throw this one in, apologies if you think its not applicable!
Hope someone can help or maybe I can help someone. I have be an Alfa driver pretty much all my life. I have recently acquired a 2004, 156 jts (74,000 kms) and discovered the following;
Down on power, burning oil, burning fuel excessively as proven by the spark plugs, black carbon build up in base, core and arch (not oily).
carried out compression test - 150 psi (dry) 250psi (wet). I think that is good compression, please let me know otherwise.
took cam cover off and hold and behold discovered Cam lobes worn - replaced them with 147 TS, had a spare set lying around...yes, they are the same, and they work !. just need to have a thread machined on the end of the exhaust cam shaft for the HP fuel pump spindle.
Also replaced the variator and variator half bearings (intake cam) and half bearing for exhaust cam, they were scored.
Also replaced all 16 valve lifters/tapets.
Re-assembled. Put fresh Castrol Edge 10-60 oil and bang ! Power is up, fuel consumption is better but still blowing out smoke, doesn't seem blue, more like black.
Oil consumption seem excessive to me (100 ml to 100km's) this is city driving, short trips. Noticed the temperature does not rise quickly, possible thermostat issue (open all the time). Can take about 20 minute to reach 70-80 degrees.
Checked spark plugs and burning right to me, slight black grey on base but grey white in core and arches (NGK twin arch spark plug).
Also discovered that the Cat Converter core (honey comb material) has been damaged as I discovered bits in the muffler (assuming due to excessive fuel burning and heat from inadequate intake and exhaust aperture). Have not experienced the Motor control system failure alert and checked the codes with the ECU Multiscan and only error code is P0443 - Evaporative Control Valve which I replaced (had one lying around) and still get the error. This one beats me, not sure but I'm not too worried about it.
So... my mystery is where is the oil going ? If it was the valve stem seals leaking surely I would see oil build up on the spark plugs. Compression is good as I can see. Is it the Cat converter causing issues ? Anyone have any suggestions or silver bullet !!
Alfa forever !! "Your not a true petrol head until own an Alfa"
Replied to this in your other post.
My 156 has done about 230K according to the ECU and I have sprinted it 4 rounds already this year without topping up the oil except for a drop recently as the cam cover has started leaking. I can't explain why but after I got it I cleaned out the inlet ports in the head,blocked off the little cam cover hose to the inlet manifold,and ran the cam cover breather down to a catch can mounted on the Gbox and then back up to the throttle body.Changed out the injectors,cats for low KM ones and made the exhaust straight through 2 1/4 inch with a big hot dog where the front resy was and an offset inlet/outlet straight through muffler at the back. I use Penrite full synthetic Racing 20 (20-60).
In summary I think the richer it runs the worse the oil consumption ( bore washing),which seems to be associated with other issues like the exhaust and cats and engine systems(manifold vacuum) etc that provide data to the ECU.
If you can get all the systems working as they should and use the right oil I think it makes a big difference,all that being said if your rings are shot nothing will save you!.
Given Direct Injection engines generally consume more oil, is the JTS issue relevant only to the 4 cylinder engines or have we also seen issues with the 3.2 V6?
I understand the main cause of oil consumption in Direct Injection engines is incorrect oil specification. If the oil is relatively volatile, the high temperature of the underside of the piston, typical of DI engines, will cause volatile oils to vaporize. End result, thicker dirtier oil in the sump and less of it. The vaporized volatiles from the oil travel from the crankcase, via the PCV to the upstream side of the inlet valves. The volatiles then bake onto the inlet valves restricting airflow and reducing power.
IF the engine is in good order, using an oil with a low volatility rating (NOACK number) may reduce oil consumption. The trick is to find an oil with a published NOACK rating.
To control oil consumption by using a thicker more viscous oil that flows less easily when cold may be doing more damage than good.
Colin, what you say about nasty gasses being drawn into the induction and fouling the inlet valves may well be true, seems plausible. It's my understanding (questionable) that a large part of the problem with gunked up inlet valves (with DI engines) is due to the back of the valve heads (i.e. stem side) not being exposed to a cleansing spray of fuel from upstream injectors (i.e. they don't exist). So, no detergent laden fuel both attacking deposits and also cooling the valves...
I vaguely recall having read somewhere or been told (but don't know for sure) that some manufacturers have resorted to installing secondary upstream injectors that are intended to 'wash' (and cool?) the inlet valves. I also (equally vaguely) recall reading that such injectors spray at a significantly lesser frequency and volume than the main injectors do. I could be vaguely wrong in my recall...
PS, apropos of an earlier post, the reason why passengers in rapidly driven Camrys become terrified is due to the dreadful understeer...
Regards,
John.
Hi John,
The Toyota 86 features Direct and Port Injection.
Not even close to a Camry but out of the same stable!
I would be very suprised if more non-turbo engines did not adopt this arrangement. More than 90% of the fuel injected directly and the remainder upstream of the inlet valves. Petrol is a great solvent for keeping inlet valves clean.
Direct injection allows very high compression ratios on low octane fuels. Good power and low short term running costs until the valves clag up!
Ceramic coated pistons keeping the base of the piston cool coupled with dual fuel injection could be the next big thing in IC engines.