Ok so it's thicker for all of what, a minute? Instead of running that thickness for months on end. Yours is just as invalid.
Originally Posted by fdcg27
Okay, so what's supposed to happen when someone goes out and starts his pickup on a cold morning? The 5W-20 is then thicker than a 10W-30 would be on a warmer morning. This is the reason that I don't think this theory has any validity. Viscosity is always and everywhere a function of temperature and it doesn't take any great reduction in starting temperature for a 5W to be thicker than a 10W. Next up theory?
Originally Posted by domer10
And get a bag, or something that holds liquid, now cut a hole...now put thin liquid and push it through...then do same with thicker fluid, let me know the pressures required to get the thicker fluid through that hole. Like it's common sense and people want to create a argument. I will take his word over someone random on a forum who thinks it's not true because he doesn't believe it.
Originally Posted by Skippy722
They do. The "5w20 or else!" thing is complete nonsense.
Originally Posted by Sunnyinhollister
I thought the 6.4L Hemi uses the same lifters as the 5.7L, however the 6.4L specs a 0W-40 viscosity and the 5.7L calls for a 5W-20.