So funny how many of the YouTube videos of people doing oil changes on these 6.2l engines install an empty oil filter and then add 8 qts of oil WITHOUT starting the engine before checking the oil level and claim the oil level is fine or even people that fill the oil filter before installing it then add 8 qts of oil and start the engine and claim the oil level is fine. Many indicate the oil level is typically half way on the dipstick hashmarks with 8 quarts and claim the oil level is fine, technically it is, but it is likely at least 1/2 quart low! Even more interesting is how GM actually released a bulletin many years ago for this style engine reducing the oil change oil fill requirement from 8.5 quarts to 8.0 quarts.
I feel this engine really needs at least 8.5 quarts and would have no issue with 9.0 quarts at oil change. AGAIN for anyone that has not read my posts in this thread, I MATCHED the oil level on the dipstick where the vehicle oil level was delivered from the factory. To the TOP of the hash marks or the top full mark on the dipstick on my engine. I do not need a different dipstick or dipstick tube!! I matched the oil level to the factory oil fill level.
Even if the doubters claim this is 1 quart overfilled, it will not hurt anything. The slow drainback from the cylinder heads and lifter galley while the engine is running will minimize and potential problems. Given these engines are buring oil and having fuel contamination issue as well as grenading overall, I feel more than happy to run 9 qts in my engine, so it will take longer to consume oil to a lower level and it will take longer for fuel dilution to become a problem for lubrication dilution.
Each his own, but I would highly suggest everyone to fill the oil level to the top of the hash mark on the dipstick, which will be over 8 quarts IMHO.
