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Just got off the phone speaking to Mobil 1 technical support. They were very much aware of the ZDDP issue and made a strong recommendation for their Mobil 1 15W-50 as a specific for our cars. Apparently (and this checks out on their web tech info), there is about 1300 ppm of zinc in that particular weight which from what I can gather, is workable. According to the tech, that level of ZDDP is peculiar to that particular weight.
The other option was the V-Twin 20W-50 intended for Harley's.
It certainly is easier to get up here in the far, icy north...but again, as always, do what floats your boat and not your valves.
Dennis
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