Originally Posted By: Bayman
Originally Posted By: beast3300
Originally Posted By: paulo57509
I just don't see varnish removal happening with PP. At least in my application.
Is is the oil filter adapter from my Lumina which has been running PP 5w-30 for the past 40k miles (4 years). I just don't see any removal of varnish.
This is not a PP bash; just an observation. I've been a Pennzoil fan since the mid-60's and I will continue to use Pennzoil. PP is used exclusively in 4 of 5 of my vehicles.
How many miles do it run it for? That is pretty sticky looking. Maybe try a pass with Ultra. That did the
most cleaning for me out of the SOPUS motor oils.
I wonder what it looks like inside the Valve Cover.
paulo57509 are you the original owner of this vehicle and have you ever used any Oil Additives too clean this engine.
When I pulled the VC's back in 2001 (86k miles) to do the intake manifold gaskets (for an oil leak, not coolant) and replace the oil pump drive seal, it looked pretty much just like the inside of the oil filter adapter.
I'm the second owner. I'm married to the original owner.
This car was filled with Havoline 10w-30 pretty much from when it was purchased as a lease return until it moved to CA from TX when it had accumulated 85k miles (2001). Since the move, it had been filled with PYB 5w-30 until it had accumulated 110k miles when I switched to M1 5w-30 for a few OCI's.
When it had 118k (2005) I filled it with ST dino 10w-30 and did a double Auto Rx treatment. After the Auto Rx treatments were over at 126k, it was filled with PYB until 139k when I made the switch to PP 5w-30. Again, the oil filter adapter looked the same as it did in the photo.
Back in March of 2011, I wanted to see what a 25% MMO with Rotela-T 10w-30 would do for one OCI.....absolutely nothing. It might have done something if I did it for more than a single OCI. This is when the photo was taken.
Now, I'm running PP for good. The presence of varnish doesn't bother me at all. The engine appeared sludge free when the intake manifold was off 10 years ago.
Too bad I can't get Kreen shipped to CA. I think this engine would have been a good test for Kreen and varnish removal.
To the OP: Sorry for the thread hijack.