My 5.2 Dodge Ram has started to show symptoms of a clogged oil pump pick up screen. My Dad had the oil changed every 3K with bulk oil at the quicky lube for the first 80K of it's life. For the last few years of that 80K the 3K OCI might be more than a year. He thought he was getting Quaker State oil and was paying extra for it, but the receipts and window stickers said different they indicated that the fills where Pennzoil bulk 10W30. He don't drive much anymore and was mad that the quicky lube place had been ripping him off. Remember he had been paying extra for his brand of oil, and it has served him well since the late 50's when he switched from Royal Triton or something like that. Anyway I started doing the OCI's on the truck that mostly just sits there anymore with Amsoil 5W30 annually. Now for the past few years I have drove the truck a lot. And recently I noticed the oil pressure jumping around at about 125K. So a few weeks ago I poured a bottle of ARX in on top of a freshish Amsoil that was in the motor for a couple of thousand miles. Normally the oil comes out nice and clean, but after 1500 more miles with the ARX it came out looking like black coffee. I refilled it with Rotella 15W40 and a bottle of MMO for the rinse and will change the oil filter at 500 and 1000 miles during the rinse. I was amazed how nasty the oil was that I drained out of it today. I'm going to do a 1500 mile rinse then another ARX treatment without the MMO then rinse like I am doing this time. The oil pressure has been getting better during the clean phase and hopefully will improve more as it all gets rinsed and cleaned out.
Bottom Line: So far so good...
Bottom Line: So far so good...