Reply to thread

Message: <blockquote data-quote="Taylorman55" data-source="post: 202835" data-attributes="member: 1290">It sure hasn’t been 50 years ago since this was the case. Maybe the last 2-3 years at MOST has penzoil cleared up These issues. I bought a 1999 Oldsmobile cutless awhile back. From day 1 the owner stated he had run Penzoil in it since new. This was confirmed with complete maint. records for the car, since day 1. Oil changed every 3000 miles. I bought the car with around 100k miles on it. It had a lower intake leak notorious on gm 3.1’s. When we repaired this and took off the valve covers there was half an inch of sludge in the top end of that motor. I had heard horror stories about penzoil prior to this but had never seen it on my own. It took a good hour  to clean the top end of that motor out, as best as we could.  Needless to say we ended up taking the oil pan off and also a shit ton of buildup. I ran havoline in it for 1000 miles, changed oil and filter. Ran it 2k miles, oil and filter and then went to 3k. After that I opened that motor back up and 95% of the sludge was gone. To me I’ll never trust penzoil. Add in the fact we have a few airplane buddies that saw issues with it and it’s case closed, for me. But I know for damn certain that oil will come no where near any of our airplanes or vehicles in the future. Doesn’t matter if it’s wrapped in a platinum jug or not. There’s just too many stories on hundreds of forums out there to back it up. Motorcraft oil compares extremely close to Mobil 1 in independent tests. Although the 5w-40 Motorcraft is about $10 more an oil change compared to Mobil 1 for our 2012 f350 diesel . I run Mobil 5w20  in my 2004 f350 v10.</blockquote>

Verification: What is the most common fish caught on this site?

Reply to thread

Recent Posts

Friends of NDA