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Title: Engine oil fill level. Post by: Baz54 on May 16, 2025, 14:50:30 pm Hi, I’m just wondering what is your fill level in the engine?
I have a deep sump and full flow to an oil cooler set up, just under the luggage area . If I fill the engine to the top line on the dip stick ,when the engine is running or just after, my fill level is just over half way . If I fill it back to the top mark , this then goes above the full line on the stick as it drains back into the engine . I normally do this as the more oil to cool the engine is better? What do you all think or do ? Thank you Paul Title: Re: Engine oil fill level. Post by: leec on May 16, 2025, 15:57:31 pm I always go by the rule of just enough oil to wet the bottom of the dipstick on any engine with a deep sump.
Title: Re: Engine oil fill level. Post by: andrewlandon67 on May 16, 2025, 15:57:54 pm A significant factor in these engines is the oil level, too low and you risk running it dry on a pull, but too high and you risk having the crank spinning through the oil, wasting effort and sloshing excessive oil into the 3/4 head. Too high of oil can also start leaks through the rear main seal and other parts of the engine, either through unnecessary immersion or artificially raised crankcase pressure. With any more oil than a stock crankcase, even with a relatively small deep-sump and full flow system, the most you ever want to show is about halfway between the marks on a stock dipstick. Hope that helps!
Title: Re: Engine oil fill level. Post by: Baz54 on May 16, 2025, 17:12:21 pm I always go by the rule of just enough oil to wet the bottom of the dipstick on any engine with a deep sump. [/quotes Thank you, I remember reading that years ago somewhere. Title: Re: Engine oil fill level. Post by: Baz54 on May 16, 2025, 17:23:32 pm A significant factor in these engines is the oil level, too low and you risk running it dry on a pull, but too high and you risk having the crank spinning through the oil, wasting effort and sloshing excessive oil into the 3/4 head. Too high of oil can also start leaks through the rear main seal and other parts of the engine, either through unnecessary immersion or artificially raised crankcase pressure. With any more oil than a stock crankcase, even with a relatively small deep-sump and full flow system, the most you ever want to show is about halfway between the marks on a stock dipstick. Hope that helps! Thank you , It looks like I’ll be siphoning some out via the dip stick tube . Although I’ve never run it down a drag strip, I do drive it quite hard . |