08-27-2014, 01:19 AM
My point of reference may be off but mine has always made the rattle. With every oil. I believe that the backlash was set right on the limit of rattling. And not every 10-30 will test as a 10-30. Good example being Mobils 10-30 auto oil tests as a heavy 20 weight when warm. I think this difference in manufacturing is what causes the rattle sometimes combined with the backlash being at its limit. This is just IMO though.
The drain back thing bothers me. I don't want my oil in the pan, I want it in the engine. It needs to be coating everything and staying there. The only time drain back matters is if the sump is sucked dry. And I've never had the oil pressure light trip.
So the way I see it, why do I want my oil getting quickly back to the pan?! It circulates GREAT and is sticking to the parts it's made to protect and there's still plenty of oil to maintain oil pressure. This is ideal!! You don't want the oil rushing in to the sight glass. It needs to be just fast enough to keep up with the pump period. You don't want that oil coming off moving parts and coming back in to the pan.
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The drain back thing bothers me. I don't want my oil in the pan, I want it in the engine. It needs to be coating everything and staying there. The only time drain back matters is if the sump is sucked dry. And I've never had the oil pressure light trip.
So the way I see it, why do I want my oil getting quickly back to the pan?! It circulates GREAT and is sticking to the parts it's made to protect and there's still plenty of oil to maintain oil pressure. This is ideal!! You don't want the oil rushing in to the sight glass. It needs to be just fast enough to keep up with the pump period. You don't want that oil coming off moving parts and coming back in to the pan.
Sent from my Z30 using Tapatalk