Source for Mobil Mobilube PTX 75W-90?
#3
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It is just a synthetic oil. I don't think it is sold in the US other than a dealer. An independent shop I know uses Mobil 1 75W-90 synthetic gear oil which you can buy at a parts store.
#4
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Racerron you are right. Tool Pants yes that stuff is available and used but Mobilube PTX is a synthetic with a slightly different formulation. I guess $25/liter is not that bad given how long it lasts.
#5
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I changed out my fluid with the regular mobile 1 pictured and it made a difference. I also was searching for a "solution" to the marmalade shifting when cold etc. I also have the lsd so I can't use the blends of redline and others of one type. I did some reserach a while back and redline recommended blending 2 of their fluids which made me far too nervious to consider- that was the only solution I came up with given the lsd issue.
#7
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The 2003 cup car service manual recommends: "Mobilube 1 SHC". The weight is not given. The recommended change interval is 5000km. Assuming it is in fact 75W-90, here is its datasheet. It seems not to be readily available in the USA. Fixedwing, it is both GL4 and GL5, where the Mobil 1 lube in Tool Pants' post, which definitely has a different formulation, is only GL5.
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#8
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From the 2003 911 GT3 Cup Parts Catalogue, the gearbox oil is Mobilube 1 SHC 75W-90. Motorsport part# 999.917.062.00
#9
Drifting