whats considered hot for oil temps

kenchan

I use the "inferior" m1 5w30 with no oil cooler for the last 5yrs driving street.

No issue for me. I don't intend to change oils either.

IDZRVIT

"Inferior" oil, eh? I may try that next oil change instead of using 'thrifty".

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"America.... still builds rockets!"
Vette: 355 cid, 400 rwhp
'13 CTS-V Coupe: 6.2L LSA, 556HP

Mt Tam I am

I needed the oil cooler even before the track. Uphill seems to really work the engine at high rev.. I have still seen 260 degrees even after the oil cooler installed but I was at the track and it was nearly 100 degrees. Could not get it higher that day. I usually change the oil before it is time too.

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chops

based on UOA's m1 5w30 is pretty much an inferior oil nowadays. its on the thinner side of a 5w-30, and tends to shear down to a 20 weight relatively quickly. along with the shearing, the longevity of the oil is shortened. look at any of hte m1 UOA's and you'll see the TBN figure to be on the low side prior to the 5K mark.

although, as long as you change at the correct interval, and dont mind an oil that shears to a thinner weight, yes, most oil will be the same. if you want a better m1 5w30, go for the "extended performance" bottle, which has much better qualities

kenchan

thanks for the info chops! ive used the extended performance in the past, but i could tell no difference...

my G's been running m1 silver cap since about 3k miles. 10yrs old, oil changed only once a year, 34k miles
she still sounds and runs like new. i only put like 3-4k miles tops each yr. same deal on my 15k 5yr old Z.