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Jaak · 10-05-2011, 07:31 PM

My engine rebuilder recommended Castrol Synted 5W40 for my Boxster. Engine was rebuilt as PO had added 4 extra liters of oil at a gas station ... she did not have a manual and read the dipstick wrong. I have used it in my 2010 F150 and it seems to run better with better gas milage. He warrants the engine and said I should not have any issues with Castrol. I am looking at upgrading to the L&N spin on oil filter kit before I put it in storage for the winter.

10-05-2011, 07:31 PM	#18
Jaak Registered User Join Date: Oct 2009 Location: Toronto, Canada Posts: 173	My engine rebuilder recommended Castrol Synted 5W40 for my Boxster. Engine was rebuilt as PO had added 4 extra liters of oil at a gas station ... she did not have a manual and read the dipstick wrong. I have used it in my 2010 F150 and it seems to run better with better gas milage. He warrants the engine and said I should not have any issues with Castrol. I am looking at upgrading to the L&N spin on oil filter kit before I put it in storage for the winter. __________________ 2002 Boxster S Seal Grey 2010 Ford F150 FX4 Luxury Retired after 38 years with the same company.