Date: 14 Sep 2006 14:01:52 -0700 From: "darthpup" <amchitkanospamexcite.com> Subject: Re: oil sludge?
Your comments appear to stem from false theory. The problems I refer to were confirmed by inspection of the lubricant at operating temperatures. In one case the oil had become so thick that it completely jammed the oil pump. MV oils increase their viscosity with temperature within and beyond engine operation temperatures. A good single weight oil such as Valvoline will sustain its viscosity with temperature. Thats why you see so many race cars using the product. There is no requirement for increased viscosity with temperature to sustain proper lubrication. Actually, quite the opposite is the requirement. The polymer you refer to is an oxidizer which increases in chemical activity with temperature. It has no way of limiting its activity and OVER thickens the oil, per your observation of 10W50.