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Lucas "Oil Stabilizer" has a viscosity of 110 cSt @ 100 C., about as thick as 1000 weight gear oil!! In their MSDS they describe it as "residual oil", which is what the US Navy used to burn in warships till they changed to JP8. In ships it requires pre-heating to flow. I would only put it into a crankcase if I had a bad bearing and I just had to get somewhere to tear the engine down. It is absolutely bad for Powerstrokes due to the HPOP.
Their "Synthetic Oil Stabilizer" still has a viscosity >40 cSt at 100 C., which is about what 180 weight gear oil is rated at. Lucas says it's OK for Powerstrokes....I don't agree.
Incidentally, analyses of these Lucas products posted on BITOG show they are nothing but very thick oil.
Charlie
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diesel Landcruiser & M37; 05 Unimog U500 w/Unicat camper
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