Synthetic ATF

Joined
Mar 30, 2003
Messages
1,655
Location
LA, CA
What's the consensus (if any) on synthetic ATF? I've heard that the advantage of better performance at extreme temps is offset by the increased likelihood of leaks and also that synthetic ATF decreases friction compared to conventional ATF, and so does not provide the correct friction needed for clutch packs. Opinions?
 
Joined
May 7, 2003
Messages
3,164
Sythetic has better tempurature stability and is less likely to varnish. As far as how slipper, I know that redline puts friction modifiers in their oil to keep the friction properties correct for the clutches. Leaks, and old myth. Finally, I have always had conserns about doing a full flush and fluid replacement on a car with old fluid, it seems to break stuff loose and cause potential transmission problems.

Cary
 
Joined
Apr 11, 2003
Messages
377
FWIW I'm doing a drain-fill today during an oil change and this will be syth. (Mobil1 of course). It's the second drain-fill with synth. for the rig.

'They' say you don't have to flush so I'm slowly moving the tranny to synth. The motor is still dino but everything else is Mobil1.

Doesn't make any perceptible difference in driving/towing on my rig to my calibrated a$$ or that of the wifey-poo.

$.02
 
Joined
Mar 28, 2003
Messages
2,029
I just did my first ATF flush last weekend -- got 6 quarts out up on ramps -- will do another one soon -- I wish they sold Mobil 1 ATF at Wal-Mart!
 

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