M1 in the motorsicles, Saab, SLK, and the mercruiser V8s
Royal purple synth 2stroke in the PWCs and 2stroke motorsicles
Haven't decided yet on the 300CD, probably M1 15w-40

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Eric, CPO, Submarines, retired.
Here's a sig line...
Mine: '68 Corvette LS1/4L65E, 83 240D, 2000 GMC 4x4, 08 FLSTC Anniv
Hers: '72 Corvette 454/4spd, '99 MB SLK, '93 Metro vert, 78 240D, '92 Silverado, '65 Fjord Rustang, '59 Fjord Fairlane, '17 Slingshot.