Honda Accord Forum - Honda Accord Enthusiast Forums

Quote:

Originally Posted by stang99x (Post 325865)

I fully see your point. However, that isn't how the manufacturer sees it. If they say run 530, and you go around running 0/20 and have an issue, I have no doubt that they'd can your warranty as such. There is a thing as "too thin" with oil.

But again, I see your point. My wifes 6.1L HEMI runs 0/40 and to me, that's way to thin for a huge american V8

You really don't understand how oil works; 0W-40, 5W-40, 10W-40, 15W-40 and 20W-40 ALL have the same weight once they thin out when they're up to operating temperature. The only difference is that the lower the "W" number, the faster it flows following a cold start. Said another way, 0W-40 in your Hemi is anything but too thin for the engine, it's more like perfect.