The Owners Manual calls for 5/30 W. --- But, the Extended Warrenty Requires an Additive, about 1/2 the density of S.T.P. in Engine & Trans. I Want to know what the Clearinces are on the Rods & Mains & Cam Bgs. are. Compaire them for 5W.Vs. 30 or 40W OIL. Oil Pump Cleariance is in Question too!
Ah, yes..... I've seen those engine warrantees that are tied to te use of a product or group of products. I couldn't see me purchasing one...
Rod and main bearings are typically in the 0.002" range but it would be nice to know what we're working on. Cam bearing inserts would also be close in there. In your owners manual, you should find a small chart showing which oils are preferred over which temperature ranges (if you live where temps can be extreme). Failing that, if the manual recommends 5W30 then 5W30 it should be.
FWIW... if I'm that far into a motor, I seldom re-use the old oil pump. A new, brand name pump adds a seure feeling and they aren't expensive..
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