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Overall I thought this report was stellar. I am not sure if I should be concerned with the lead or not. I do redline the engine a fair amount which may account for this. There was no maintenance on the engine or anything unusual. Could the insolubles be causing this? Comments...

I have a '91 BMW 325i (E30) with the 2.5L straight six. My owners manual calls for 20w-50 in anything above like 0 degrees F. With the move to thinner oils and 20w-50 getting harder to find, can I use a thinner oil in this engine? The BMW guys say you need to use 20w-50 because the engine oil...

Okay so I want to start using the new Mobil 1 Truck/SUV formula --errr Delvac --shhhh -- in my SUV (well out of warranty). I would like to use the oil mainly for longer oil changes and good protection it offers. I have read on the boards how this is a super high mileage oil used in trucks. I...

Hey guys need some insight on an oil pressure question. I have a 2003 Nissan 350Z. After completing the engine breakin with DINO oil (using Bosch oil filters) I switch to Mobil 1 5W-30 as per the owners manual recommended weight. Still using the Bosch oil filter, I have noticed that my oil...