240;91484 wroteWhat's the direct advantage of good oil like the Penrite, over inferior stuff (like the cheaper Shell/Castrol/Valvoline options)? In a redblock I mean.
Redblocks seem to last forever in any case so is it just a question of how much wear the engine will get?
I change my oil at least every 7500 km (filter too), if not sooner, with whatever I can get for under about $35, usually it's 15W-40 or similar. But I'm wondering if it's worth shelling out the extra money for the HPR10.
Don't bother with the hpr10, hpr15 is the weight suitable to the Motor, the Penrite runs higher zinc levels then other brands, meaning less camshaft wear and bore wear, and redblocks do get bore wear!