Mixing different brand ATF, any issues?
Mixing different brand ATF, any issues? I currently have Valvoline's Dex/Merc ATF in my transmission but picked up some Castrol Dex/Merc ATF cause they were having a good sale.
Would mixing the two together cause issues for my transmission fluid and transmission?
I know it sounds silly but I'm sure different brands have different formulas for their Dex/Merc ATF.
Edit: Off Valvoline's website (FAQ section http://www.valvoline.com/faqs/system...mission-fluid/) it states that their ATF is compatible with most brands ATF.
I still am curious to know (any transmission gurus out there?) if it has any long term effects. Anyone have any knowledge on this?
Would mixing the two together cause issues for my transmission fluid and transmission?
I know it sounds silly but I'm sure different brands have different formulas for their Dex/Merc ATF.
Edit: Off Valvoline's website (FAQ section http://www.valvoline.com/faqs/system...mission-fluid/) it states that their ATF is compatible with most brands ATF.
I still am curious to know (any transmission gurus out there?) if it has any long term effects. Anyone have any knowledge on this?
Last edited by benoh; Feb 26, 2010 at 01:42 PM.
X2 I built my own th400 and presoaked the clutches in dexIII but when I got ready to fill it up had been reccomended to run tractor hydraulic & trans fluid so I asked the same question you just asked on another forum and had a very reputable builder say its OK so I went with it.
Bringing this back up, I have 8 quarts of Valvoline VV353 (Dex/Merc for Dexron III applications) and about 6 quarts of Castrol Dex/Merc or Dexron VI (I can't remember at the moment) and I need to fill a 4l60e with a stock stall. Since I'll use more than 8 quarts, would it be alright to fill the balance with Castrol? The above responses seem to indicate it's alright, but is there any mixture I should avoid?
