OK, I know this guy who ran 5qts of oil in his KA-T vs the 4qts he should've been running the whole time. He never bothered to read the manual, he just assumed it was 5qts. Perfectionist in some things and totally ignorant on others...
Anyone care to guess how much power loss due to running an entire qt over spec?
Jesse
PS - That guy I know was me for 2yrs

Haven't had any issues but I imagine it caused a bunch of carbon build-up.
I was supposed to dyno Sat. to see if there were any improvements by running just 4qts and Royal Purple but skipped it to prepare my 550ccs and Z32 MAF setup.