[DML] Re: Transmission Oil

["Dave Swingle" <swingle@xxxxxxxxxxx>]

It's not all that critical with one exception. Factory spec is 
something like 75W90 hypoid gear oil. I've tried everything from the 
cheapo stuff that comes in a gallon at Autozone to Red-Line, and 
don't notice any operational difference. Over the long term a 
synthetic is the way to go. 

I have Redline 75W90 in mine now, and it seems to leak more than the 
other stuff. Main thing is to not make the mistake of using Redline 
MTL (Manual transmission lube) or ATF. This is not just a manual 
transmission! MTL/ATF is too thin for a transaxle, and not designed 
for a differential. I called Red-line to make sure, and their 
recommendation was to use their 75W90-NS. Their naming convention is 
somewhat backwards, the "NS" means that it's not for non-slip 
differentials. The 75W90 (which has the non-slip additive in it) is 
supposedly too slippery for the syncros to work properly. 

That being said, my preference is still for Valvoline synthetic. It 
seemed to leak a little less, and like I said I really didn't notice 
any difference in driving it. It costs the same as the Redline, about 
$8 a quart (and it takes almost 4 quarts!). 

Dave S

--- In dmcnews@xxxxxxxxxxxxxxx, "usndmc" <usndmc@xxxx> wrote:
> My car is a 5 speed, and I am going to change the transmission oil 
> soon. I was wondering what kind I should use. Is there any 
consensus 
> about this?
> 
> Dave
> #5968




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