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Originally Posted by Barry Bordes
Vex and Joff,
In the NSU paper linked above, the engineers were finding engines being destroyed after high speed runs on the Autobahn. Their conclusion was preignition for metal ash deposits on the rotors.
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It's been a while since I've looked at the NSU papers, do you have a page to the conclusion that declares the ash deposits on the rotors as being the cause? I was thinking it would have been a combined effect of the plugs and combustion surface.
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The good news on the Valvoline VR1 is that I found it a O'Reilly's so it may be a other automotive stores also. They only had it in 50W and 20W50. It comes in 10W30 and 10W40 also.
Barry
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Is it classified as fully synthetic, or is it a highly refined conventional?