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which transmission fluid is better?


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Mckays Reatta

i am helping my dad getting his Reatta back to a driving state the Reatta has high mileage. But we need transmission fluid we already bought some, two kinds which we think are the right kinds but we don't know which one is better, the two kinds are both Castrol. Bottle one says Transmax Dexron- vi mercon Lv  it also says full synthetic formula for maximum fuel efficiency and its GM approved. bottle two says Transmax high mileage. then it says superior performance for maximum transmission life. for transmissions with over 75,000 miles so which is better?

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Ronnie

Welcome to the forum!  Sorry, I can't answer your question about which oil is best.  I just wanted to be the first to welcome you to the forum.  If I had to pick between the two oils you mentioned I would take the last one you mention for a high mileage car.

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DAVES89

I use Valvoline Dex/Merc. It has worked well for me over the years.

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