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Old 09-27-2008, 06:39 PM   #14 (permalink)
Fred Thornett
Ozzie Skeptic
 
Join Date: Sep 2008
Location: Hobart, Australia
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Quote:
Originally Posted by tjts1 View Post
Yeah, I think ur right. After reading further about transmissions that can run either ATF or gear oil, mixing traces of gear oil with ATF can cause the oil to clump up and destroy the transmission (or differential in this case). I think I'll just switch them both to synthetic fluids and leave it at that.
I run a Mazda MX5 (Miata) gearbox using gearoil mixed with20% ATF. I was advised to do this by a bloke who is the chief mechanic (has 50 plus staff) for a GM franchise. It immediately reduced crunching selector noise between first and second. He claims that putting ATF in gear is routinely done in his business to reduce noise and to make gearboxes less "sticky".

I wonder if I should cease this practise as I do not want to blow up my gearbox?
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