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I'm just looking up spec sheets on the web - I don't have any special sources. The spec sheet for that oil you just mentioned says:
Viscosity at 104F: 76.0
Viscosity at 212F: 15.4
Viscosity index: 211
Thanks for mentioning this - that actually looks even closer to Porsche Spec than the Lubri-Moly GL-5... but it's GL-4, not GL-5, which many people on the web claim is a good thing in these transmissions because apparently GL-5 can wear copper bits, and our transmissions have those?
Have you used the Motorcraft Synthetic 75w-90?
I'm sure there are other specs that are also important and I know very little about oil.
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'01 Boxster S
'08 Mazdaspeed 3
'04 SV650
'96 K2500 Diesel 5-speed with DB2/4900 conversion
Last edited by wmjosiah; 02-24-2018 at 04:27 AM.
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