Author Topic: gearbox oil  (Read 6412 times)

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dehne

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gearbox oil
« on: January 26, 2011, 10:12:56 AM »
hi there just wondering wgat would be the best oil to use in the gearbox
now it is a 85 mdl 2.5 90 box but it now has a lsd diff in it so when im putting in i figure but new oil into i found a castrol one for lsd's but it also said not recomended for syncro boxes
and with the billions of years of knowledge one here the answers will be plentiful
 thanks all
now
1x 85 mdl road 90
2013 Giulietta 1.4
2015 Launch Edition Giulietta
Past
Multiple Alfa 90’s, Alfetta’s and 147’s

MD

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Re: gearbox oil
« Reply #1 on: January 26, 2011, 07:56:24 PM »
Transmission Fluids for the any Alfa  Transaxle with a limited slip differential.

1. Australian Alfa Romeo Dealership recommendations.

(TBA if and when it arrives)

2. The 75 owner’s manual. SAE 75W-90 API GL-5
No distinction is made for an open or limited slip differential in the manual. Lubricants recommended :-

Agip Rotra SX SAE 75W-90 >now LSX 75W-90
Shell Spirax 80W-90HD > now Spirax A80W-90
IP Pontiax HDS 75W-90

3. Oil company recommendations

Penrite, Street- Transaxle 75W-90 GL-5 Semi synthetic
Racing- Sin Gear Oil 75W-90 GL-5/6 Full synthetic

Valvoline Street/Race Duragear 75W-90 GL-5 Semi synthetic

Shell Street Spirax A80W-90 GL-5 Mineral
Racing XGO 75W-90 GL4&5 Synthetic

Agip Street/race Rotra LSX 75W-90 GL4&5 Synthetic

Mobil Street/race Delvac synthetic gear oil 75W-90 Synthetic

Redline Street/race Light/ Superlight 75W90NS GL-5 Synthetic
Street Heavy Shockproof, Synthetic
Race Lightweight Shockproof, Synthetic
Race Superlight Shockproof. Synthetic

« Last Edit: March 02, 2011, 04:38:55 PM by MD »
Transaxle Alfas Haul More Arse.

dehne

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Re: gearbox oil
« Reply #2 on: January 27, 2011, 09:39:11 AM »
cool thanks heaps for that now just need to decide which one
now
1x 85 mdl road 90
2013 Giulietta 1.4
2015 Launch Edition Giulietta
Past
Multiple Alfa 90’s, Alfetta’s and 147’s

DaveB

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Re: gearbox oil
« Reply #3 on: March 13, 2011, 01:03:02 AM »
I've got my TS properly back on the road & driven about 1500 klm since some work in the ACT.

The mechanic in Canberra was reluctant to do a gearbox rebuild to address the 1-2 syncro problem, & instead recommended tightening the linkage joins + using Redline superlight shockproof gear oil. It's fully synthetic, costs a bomb, but works a treat & much cheaper than a gearbox rebuild. Stoked, it's a far better gearchange now.

Great result from this oil, better than any other I have used in the last 12 years on TS & 3L 75's, and that includes many of those above.
Recommend it very highly.

DaveB
DaveB

AR75's TS 2.0 & 3L Potenziata (Daily Drivers)
1950 Pug 203
Previously possessed by:
  Sud, 105 Coupe & Berlina, 75V63L
With a bit of Brera on the side