Automatic Tranny Fluid

Personally I run Amsoil's chaincase oil. It seems to do the trick. Not too costly.

However back in '03 I was in Colorado and we ran into a group of guys testing some 'Cat's and ATF was what they were running. I don't know which variety of ATF since there are a few differences between them.

This is kind of like running ATF in your power steering pump. Ya it can be done but should you use it if the OEM specifies something else?
 

FuzzButt said:
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This is kind of like running ATF in your power steering pump. Ya it can be done but should you use it if the OEM specifies something else?
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Well, since you mentioned it, I found a fresh bottle of Yamaha gear oil I didn't know I had but kinda remember buying it.

I'm pretty sure I have Mobil-1 in my C-case now.
 
Snomofo, I understand where you are coming from, comparing transmissions, and transfercases to chain cases. Here is where I believe the differance lays; The chain case has at most 6 ounces of oil, with a rotation of up to 9,000 rpm usually around 7,000 rpm, no cooler. A transmission, some up to 20 qts, transfercases around 4 qts. manual transmissions, around 6 qts. rotation max of 5,000 rpm usually around 2,500 rpm. some have coolers. I do not know of any rear axle which uses ATF though. For the minimal amount of oil and minimal cost why use the cheap stuff? I understand for racing applications maybe, but for trail riding no. Good luck Al
 
alswagg said:
Snomofo, I understand where you are coming from, comparing transmissions, and transfercases to chain cases. Here is where I believe the differance lays; The chain case has at most 6 ounces of oil, with a rotation of up to 9,000 rpm usually around 7,000 rpm, no cooler. A transmission, some up to 20 qts, transfercases around 4 qts. manual transmissions, around 6 qts. rotation max of 5,000 rpm usually around 2,500 rpm. some have coolers. I do not know of any rear axle which uses ATF though. For the minimal amount of oil and minimal cost why use the cheap stuff? I understand for racing applications maybe, but for trail riding no. Good luck Al
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Point taken Al. I was kind of playing Devil's advocate. I don't disagree that for the amount of fluid you're using, high quality stuff all the way.

I too am not aware of any rear axles that use ATF, but remember though, all front wheel drive transaxles also have the final drive (differental) swimming in ATF not gear oil.
 
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