AO Platinum Member
Join Date: Aug 2003
Location: London, England
Re: Dexron III Mercon ATF??????
Not all ATF fluids are full synthetic.
Don't use a non-synthetic fluid
Yes "Selenia CS Speed" is technically a DIII ATF, but it is probably way above the spec of most other DIII ATF fluids. The problem is that I don't think the D4 spec officially exists yet!
Selespeed fluid is VERY thin at low temperatures, far thinner than most ATF and the system doesn't generate much heat (unlike std automatic gearboxes).
Use the correct fluid.
Having said that I'm using Redline D4 spec ATF (full synthetic & very thin)