Thoughts?
Here's the under valve cover shot of my Jeep when I was replacing the crank case breather hoses and valve cover gasket. The engine had 96500 when I got it used and I ran QSGB and a Classic filter for about 15k before falling into the high zinc diesel oil regime. M1 TDT was used for about 30k until I made the switch to Pennzoil. (I had previously blamed QS Defy for excessive consumption, but I am beginning to think it was just leaking.. My fill of PYB was down nearly a quart by the time I changed everything out. Its funny how it went from no consumption whatsoever in 5k to about half a quart every 2k-3k.)
Figured you guys would want to hear this: I stirred up a bit of trouble on a Jeep forum last night when a fellow member asked the weekly "what oil to use" thread. A different fellow user said Pennzoil caused sludge so I posted a photo of my engine and a thread to a UOA. His proof that it was bad was a few YouTube videos. He then called me a lair and said my engine wouldn't be that clean if I used what I said I did. I think I got the thread locked so its okay to talk about it now.
(Honestly, I now feel PYB is one of the cheapest conventionals at WM because it still has a bad reputation and the sales are still lower compared to say Castrol GTX.)
While my engine does appear clean, I am honestly surprised to see that much varnish.. Not that its bad or anything, but I would have assumed the synthetic diet and highway miles would have cleaned it up better. Unless varnish is there to stay once it forms? I am pretty sure my Jeep was a female driven kiddy hauler (found marshmallows under the back seat a while back.
) by the PO so maybe it was short tripped?
Here's the under valve cover shot of my Jeep when I was replacing the crank case breather hoses and valve cover gasket. The engine had 96500 when I got it used and I ran QSGB and a Classic filter for about 15k before falling into the high zinc diesel oil regime. M1 TDT was used for about 30k until I made the switch to Pennzoil. (I had previously blamed QS Defy for excessive consumption, but I am beginning to think it was just leaking.. My fill of PYB was down nearly a quart by the time I changed everything out. Its funny how it went from no consumption whatsoever in 5k to about half a quart every 2k-3k.)
Figured you guys would want to hear this: I stirred up a bit of trouble on a Jeep forum last night when a fellow member asked the weekly "what oil to use" thread. A different fellow user said Pennzoil caused sludge so I posted a photo of my engine and a thread to a UOA. His proof that it was bad was a few YouTube videos. He then called me a lair and said my engine wouldn't be that clean if I used what I said I did. I think I got the thread locked so its okay to talk about it now.
While my engine does appear clean, I am honestly surprised to see that much varnish.. Not that its bad or anything, but I would have assumed the synthetic diet and highway miles would have cleaned it up better. Unless varnish is there to stay once it forms? I am pretty sure my Jeep was a female driven kiddy hauler (found marshmallows under the back seat a while back.
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