Quote:
Originally Posted by 93097004xx
I’m not sure there is a replacement for high zinc content. I only run VR1 for this reason.
Pretty sure VR1 is the best oil ever for porsche aircooled turbo engines.
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synthetic was designed for hi heat applications, jet engines.
with dyno oil you risk the chance of coking in the turbo. I have seen first hand what can happen when a turbo gets coked up and then it comes lose. it WILL do far WORSE damage to your engine than an oil with a little less zinc in it will do.
I have seen a spray bar hole get plugged, eat up a cam lobe and a rocker face.
this was just a spray bar hole, imagine it getting to a bearing.
your valve guides will wear out long before your valve train using mobile 1.