I dont know if there is any thread about this but the improved FE with lower oil levels may be safely done if you add an accumulator to the oil system , also helps with cold start up because engine is pre oiled before start up so fire it up and go . Moroso makes a 1.5 quart unit , easy to add on most cars, just put a tee fitting on oil sender fitting and run hose to tank, if you put in a ball valve at tank you can pre oil the motor, < I had one on the mustang 302 I used to race and you can run 1/2 quart less oil as the tank holds 1 1/2 more, so you have a engine spinning through less oil and a pressurized quart in reserve for backcup or turbo cool down and pre oil if you remember to shut off the tank before shut down, under 100$
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