Originally Posted By: gfh77665
Where did you get your info? I said A FEW SECONDS. No one said or implied "10 minuets". If anyone believes 30 flows as fast as 5-20, why did petroleum engineers develop multi-vis oils in the first place? Are multi-vis oils just a worthless marketing ploy?
I get my info from experience and observation, not the internet. If the ambiant temperature allows ( in Delo's case, I'd say 32*F and up) it doesn't take a few seconds for SAE30 to pump. As soon as you start cranking the engine, oil is pumping. I have seen this with SAE30, 10W40, and even 20W50 down to freezing conditions in several engines (Jeep F134, 258, 2.5L, 4.0L, small block Chevy). Oil flows from the rockers when you are cranking.
Originally Posted By: gfh77665
In the time it takes the 30wt to flow, some metal-to-metal wearing has occurred.
You're saying that it takes several seconds for SAE30 to pump in a running engine causing metal to metal contact. This is why I added my "10 minute" sarcasm. This statement is false.
Originally Posted By: gfh77665
Even if its only for a few seconds, after many starts, this wear adds up
Where was my wear? Single digit numbers from a SEVERELY beaten Jeep with many starts which also rolled and even ate some dirt.
I will never understand the fear of straight weight or even thicker oils on this board.