Ok, cats outta the bag, I'm a Schaeffer oil rep, nuff said, I would NOT suggest any 15/40 Diesel oil for any "gas" engine period. They are NOT formulated for GAS folks, they're formulated for DIESEL! I've run Schaeffer 20/50 Racing oil in my street rods, customs and all my bikes. I've been riding over 50 years. I've owned HD's, Yamaha's, Hondas, Triumphs, BSA's, Ariels, Nortons, Bultacos (2 strokes), Royal Enfields, and a host of others, (1938 Areo) yes and even a Vincent! Go to http://www.Schaefferoil.com. Tech data sheets and MSDS sheets are available for your viewing. I just purchased an "08" (off the floor NEW) Venture, I like it, I just ckicked 600mi and of course, time for the "first" lube,,,, Schaeffer 20/50 and 80/90 gear lube in the diff. Rode about 100 clicks and reduced my rear "whine" significantly!....That's it from me!
Respects on whatever you decide to use, as for me, well ?,,,,need more info,,,,lemmeno
Renne