munched engine...ouch! not for the faint of heart

4.2 V8 32v Naturally Aspirated - 414 bhp
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ArthurPE
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Post by ArthurPE » Mon Aug 09, 2010 9:24 pm

pippyrips wrote:Temp difference was there - scouts honour :)
not doubting...
just trying to figure out 'why'?

maybe harder to pump = rise in temp?
maybe a bit less friction and more shear
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pippyrips
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Post by pippyrips » Mon Aug 09, 2010 9:33 pm

No idea! I changed mainly on advice from Opie oils following SR-71s post track day oil analysis combined with some thinking around it helping to prevent and unwanted transfer as you suggest
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ArthurPE
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Post by ArthurPE » Tue Aug 10, 2010 12:11 am

pippyrips wrote:No idea! I changed mainly on advice from Opie oils following SR-71s post track day oil analysis combined with some thinking around it helping to prevent and unwanted transfer as you suggest
I still can't figure out why 5W40 US vs 5W30 RoW?
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SR71
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Post by SR71 » Tue Aug 10, 2010 4:43 am

I still can't figure out why 5W40 US vs 5W30 RoW?
Its all to do with carbon.






































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