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Old 12-20-2020, 04:32 PM   #408
pazzoduc
Scooby Newbie
 
Member#: 493859
Join Date: Nov 2018
Chapter/Region: TXIC
Location: >> N. Dallas<<
Vehicle:
06 WRX TD Swapped
sorta black-ish

Default

Any reason to not use CK-4 oils for our older EJ engines? The necessary additives in FA-4 oils to get a little more fuel mileage isn't likely going to be a benefit, no?


Living in a high temperate location seems like the higher viscosity CK-4 oils would be a better choice for me than the FA-4 oils particularly when used in a high output modified engine?


EJ25 +/-450 HP, oil cooler, AOS, TMIC, Mishi XL radiator, E85 flex. Summer temps regularly 100f, Winter temps rarely below 40 cold start.
Have not had bearing clearance conversation with machine shop yet, so have not put that variable into the discussion yet.
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Last edited by pazzoduc; 12-20-2020 at 04:40 PM.
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