Hey im looking to change the oil in my tranny. I was wondering what kind i should use. I heard good things about the GM syncromesh, but what would you guys recommend.
Oh man, this is a debate for the ages. Go the manual transmission forum and search the word fluid in there. You will find a lot of info Long story short, the absolute best stuff is the VW OEM tranny fluid that is GL-4 rated. You can only get it from the dealership or a couple other places and it will probably cost bank.
I once made a post where I gave the viscosity at 40C and 100C for a bunch of the transmission oils that we use in our gearboxes, but it looks like the mods of this forum thought it was useless and deleted it.
I've found the chart again and will post it.
VI Vis@40C Vis@100C
128 159.0 18.3 = AMSOIL CTL SAE 50 Powershift GL-1
..............16.7 = Motul MOTYLGEAR 75-90 GL-4/-5
..............15.6 = VW G005000/G005100 GL-4
185 90.0 15.6 = Redline MT-90 75-90 GL-4
..............15.2 = Mobil 1 Synthetic 75W-90 GL-5
..............15.2 = Motul Gear 300 75-90 GL-4/-5
..............15.0 = Elf Tranself Synthese FE 75-90 GL-4/-5
132 116.0 14.9 = AMSOIL AGL 80W-90 GL-5
177 84.5 14.7 = AMSOIL MTG 75-90 GL-4
133 76.2 11.0 = AMSOIL CTJ SAE 30 Powershift GL-1
183 56.2 10.6 = Redline MTL 70-80 GL-4
194 47.1 9.6 = AMSOIL MTF Synchromesh Trans fluid (GM/Chrysler) None
208 41.6 9.08 = Penzoil Synchromesh trans fluid None
198 34.0 7.5 = Redline D4 ATF Dexron III / Mercon / API GL-4
138 40.5 7.1 = AMSOIL CTG SAE 10W Powershift GL-1
..... 31.2 6.5 = VW G-052-171-A2 None
..... 35.1 6.38 = VW G-055-726-A2 None
..............6.3 = VW G52 (part numbers G052726A2 / G05272601) None
Modified by nater at 4:38 PM 2-10-2008
Quote, originally posted by xxxfattonyxxx » NO MOBIL 1, i ruined my tranny with that crap. I use redline mt-90 but whatever you use make SURE its GL-4 not 5
6 years with no problems here
Quote, originally posted by sxracer001 » not sure about the o2a trans, but ive been using GM syncromesh in my 2 liter o2o trans and its been awesome, shifts are great
Garden State Euros Northern New Jersey Tri-State European Car Club
Current: 2010 vw GTI
mods: APR carbonio stage 1&2 intake, APR K04 flash, AWE turbo outlet pipe, B&B DP, Magnaflow catback, Diesel Geek shifter, APR 27mm Rear Sway bar, autotech dogbone insert,BSH recirc. catch can, Southbend Stage 3 clutch disk, K04!!
im curious about the vicosity chart. 100C is like 212F? do you really think manual tranny fluid ever gets that hot? i dont see how it could... my engine oil barely ever gets over 200F..
edit: ive ran mobil 1 in my 020 for 2 years no probs what so ever with a peloquin. shifts like butter with 160k on the original transmission
Modified by Pry at 3:39 PM 2-6-2008
Quote, originally posted by Turbostuff » i guess i am the only one that uses royal purple.
i'm happy with it.
im using royal purple too. trans shifted wonderfully for the first few months i had it in. then i turbo'd it...ha. damn weak 02o actually i think i just need to adjust my clutch cable.
overall im very happy with royal purple products.