Quote:
Originally posted by EKam
^ Redline is the best out there IMO, many here use it.
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Both Redline and Amsoil boast some pretty impressive stats for their synthetic ATFs. Redline is formulated off of a polyester base, while Amsoil is a polyalphaolefin (PAO) product, so if you have a reason for preferring one basestock over another, that may be a factor.
Here's a biggie, though (at least for those of us who have Camrys that require the use of Toyota Type-IV ATF): Redline is quite clear that none of their fluids are Type-IV compatible. They would NOT tell me whether they said this for true technical reasons, or as a legal cover. Amsoil, on the other hand, certifies that their syn ATF will work well (and safely) in all Type-IV applications, and their product warranty will apply if their ATF is used in a Type-IV car.
In my year-old, 32k mile V-6 Camry, I had been experiencing some mild shudder on the factory fluid (as described in another TN thread). As an intermediate step (before going syn), I just had the local dealer do a full evacuation/flush with T-IV, to see if fluid age was an issue. Presto, shudder gone!!! Obviously then, 30k is too far with Type-IV (at least in a hot southern climate), although mine was barely discolored and smelled fine. I'll drive it another 10k miles to let it fully dissolve any crud that may be in there, and then do it again with Amsoil.