I'm not really looking for a product suggestion. I am interested in what brands you guys like these days for Synthetic Diff and Trans fluids. I guess you could think of this as an informal poll of sorts.
What are your favorite Diff and Trans fluids...
- Thread starter BobsArmory
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My first choice is RLI.
If they don't have something, or if I'm recommending an oil for someone who needs oil with a track record in racing, then I look to Motul.
If Motul doesn't have it, I look to Amsoil or the OEM fluid, depending on the case.
If they don't have something, or if I'm recommending an oil for someone who needs oil with a track record in racing, then I look to Motul.
If Motul doesn't have it, I look to Amsoil or the OEM fluid, depending on the case.
Amsoil. Very good product, priced reasonably and readily available.
I use valvoline dino oil in my diffs with the friction modifier (required by Ford).
I usually use valvoline ATF for automatics, but I'm now leading more towards whatever's somewhat cheaper or whatever I've found here or there. I have a case of Shell dexron 3 from a neighbor who didn't need "old oil". Well.. there's nothing wrong with it in my Taurus! My manual trans Ranger get Valvoline dino.
next change I'll probably up the ante to the semi synthetic stuff.
I usually use valvoline ATF for automatics, but I'm now leading more towards whatever's somewhat cheaper or whatever I've found here or there. I have a case of Shell dexron 3 from a neighbor who didn't need "old oil". Well.. there's nothing wrong with it in my Taurus! My manual trans Ranger get Valvoline dino.
next change I'll probably up the ante to the semi synthetic stuff.
I have several, but my favorite is made by Lubrication Engineers and some are not synthetics.
If we are just talking about full synthetics, then it would have to be a coin flip between Amsoil and Red Line.
If we are just talking about full synthetics, then it would have to be a coin flip between Amsoil and Red Line.
Shaeffers 204SAT (Dex/Merc type) performed well for 45K miles in my 4T60E.
Amsoil ATL (Dex VI type) is performing GREAT. If it lasts 60K miles, it will be my favorite.
Amsoil ATL (Dex VI type) is performing GREAT. If it lasts 60K miles, it will be my favorite.
ATF: Pentosin ATF 1 approved for extended oil drain intervals in European Buses
Diff: Royal Purple max gear or lubro moly 75w 90
Diff: Royal Purple max gear or lubro moly 75w 90
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Amsoil trans fluids and gear oils since 1995.
I should add that I just started an Auto-RX run with Super Tech synthetic oil.
I should add that I just started an Auto-RX run with Super Tech synthetic oil.
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Schaeffer 204SAT (depends on app though)
Amsoil Severe Gear.
Amsoil Severe Gear.
ATF - Red Line D4
Diff - Red Line 75w-90NS
Diff - Red Line 75w-90NS
Give me Redline for the transmission and differential.
I have had great results with AMSOIL ATF, it made a night and day difference in the performance of our Navigator transmission. I have also used Schaeffer's 204 ATF in a few hot rods with great results. My favorite gear lubes aren't synthetic; I run 890 Vari-purpose and Moly Universal gear lubes from Texas Refinery Corp.
gear oil would be Amsoil Severe gear
Trans fluid would be Walmart Dex 6
Trans fluid would be Walmart Dex 6
I am a big fan of the GM 75W90 "Grape Juice"
Valvoline Dex VI for slushboxes that call for Dex III, RP ATF for manual trans that calls for ATF and any GF-4 gear oil for older manual trans that call for gear oil.
For diffs it's M1 75W90.
For diffs it's M1 75W90.
I am suprised that there is only one M1 pick so far. I figured there would be a lot more M1 fans out there.
Originally Posted By: BobsArmory
I am suprised that there is only one M1 pick so far. I figured there would be a lot more M1 fans out there.
IMO, regarding M1 trans and gear oils, there are more robust products available for roughly the same price. They are good products, and if they were priced comparably to Valvoline SynPower I think you would see a lot more M1 trans and gear lube fans. As it stands now, you can get your hands on Red Line 75W-140 and Amsoil Severe Gear 75W-140 for less than M1 75W-140.
I am suprised that there is only one M1 pick so far. I figured there would be a lot more M1 fans out there.
IMO, regarding M1 trans and gear oils, there are more robust products available for roughly the same price. They are good products, and if they were priced comparably to Valvoline SynPower I think you would see a lot more M1 trans and gear lube fans. As it stands now, you can get your hands on Red Line 75W-140 and Amsoil Severe Gear 75W-140 for less than M1 75W-140.
Petro-Canada.
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