Originally Posted By: ltslimjim
^Probably...
PP or PU for 25,000 or 2 years, then re-picture post OR kreen it.
I don't buy into Pennzoil's super duper cleaning power. I doubt the gentle extra cleaning additives will clean the block when so many cleaner additives couldn't.
Originally Posted By: Brons2
Maybe try Kreen next after the rinse phase?
I'm willing to try it next, sure.
Originally Posted By: Pablo
I've posted many times Amsoil flush will not remove stains. It's for sludge removal and removal of your old oil.
Yea i figured that after looking under the valve cover post 3 applications.
Originally Posted By: PZR2874
OP, try these tests again (different intervals of course)with a real cleaner like B12 or SeaFoam.
Bet you get the desired results.
I got a can of SeaFoam in the garage. Will try that next. I just don't like the fact that it thins down the oil. I'll have to dilute it with some 10w40 (vs using the 5w30 i've been using).
Not sure about B12. I'll have to do some research on it.