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Reply to "Going Off the Reservation"

^ I completely agree with this. Anecdotal evidence remains anecdotal.

Nobody is ever going to do a controlled study on motor oil in old engines. If they did, the data would be useless in a few years because the formulas change regularly. Shear tests and HDDP counts are good data, but viscosity preference has more to with theory than anything else.

I have good lubrication on startup because I have a pre-oil system (accusump). Does this mean I can run heavier oil than a more conventional application? I also have an external relief so that even if I'm pumping molasses, I'm never going to burst a filter or line. A true 5W50 synthetic with great shear numbers and 1500 PPM ZDDP would be the cat's meow, but such an oil doesn't exist.

Based on the article, I'm inclined to run VR1 when my back-stock of BP oil runs out, but I'm not dumping $70 worth of oil on a hunch.

Last edited by Stan Galat
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