Cudos to Bill for cracking the Manual tranny fluid question!!
And excuse me for spelling "sulpher" wrong. Stuff smells anyway! ; p
GS -
topbanana@98rockmail.com wrote:
> I finally go to the bottom of this Manual Trans Fluid issue. I called Quaker State's
> tech info line. After running the # for it (MS-9224), he told me that it is (drum roll)
> called "Synchromesh" and is made by Penzoil. A 75W85 API GL3 Gear Oil.
> This however is NOTregular gear oil. It is kind of a hybrid between gear oil and
> motor oil but not a "mix" of the two.The GL# rating says that there is
> considerably LESS sulphur in the oil. The added sulpher increases the pressure
> and heat the oil can withstand. GL5 has the most sulphur and is used almost
> exclusively in rears. Apparently the metals they use in the gears and to coat
> the gears with is harder and more resistant to the corrosion that the sulphur causes.
>
> Normally a GL4 gear oil is used in Manual transmissions because the metals are
> "softer" and the GL4 oil has about half of the sulphur of the GL5. But over the long
> haul, there is still usually some corrosion and varnish that occors.
>
> As far as he knew though, no one makes a direct synthetic replacement for it.
> But the good thing about it is that it is a pretty good oil in it's own right.
> It is good for up to 300 degrees and has a pour point of -50 degrees.
> The severe service change interval is listed as 18,000 miles.
> That's all I have for ya everyone. If you have any more questions, drop me a line!
>
> Bill Maurits
> 98 CC 5.2L 5-spd 3.55 sg
>
> ....................................
> Click here for no apparent reason.
> http://www.98online.com
>
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