Subject	Yup. 13 years of UOA moved me off M1 0W40 and
Posted by	vorpalZed on June 18, 2021 at 5:33 PM
	This message has been viewed 234 times.
In Reply To	I am surprised that no one has said “used oil analysis” posted by ConVerTT on June 18, 2021 at 08:21 AM
Message	Into M1 15W50 based on the better sample viscosity ratings, less wear metals in samples and higher zinc PPM levels. Anything else other than UOA series (not just one) or physical inspection is pure conjecture.
Follow Ups	How long have your bearings lasted with High HP? - Z Force1 19:42:20 06/17/21 Seems like the best wear is attributed to a 20w-50 weight - Stanky (BC) 20:46:09 06/17/21 Re: Seems like the best wear is attributed to a 20w-50 weight - Z Force1 20:52:01 06/17/21 Do you know of any good fully synthetic 20w50 brands? (n/m) - Z Force1 20:53:20 06/17/21 They all use RP HPS. I’ve been rocking it for 3 years now (n/m) - Stanky (BC) 21:07:15 06/17/21 Re: They all use RP HPS. I’ve been rocking it for 3 years now - Z Force1 21:29:21 06/17/21 Greg recommended 15W50 Mobil1 - vorpalZed 22:06:14 06/17/21 I spun bearings running 15W50 Mobil 1. - MixManMash 22:36:57 06/17/21 I wouldn't blame the oil for that one - vorpalZed 07:09:17 06/18/21 True. (n/m) - MixManMash 21:35:28 06/18/21 It’s the cold thickness of 20 that is too thick, not - not4resaleZ 07:16:55 06/18/21 I’m not saying it’s unacceptable, and if you’re using a - not4resaleZ 08:37:59 06/18/21 I agree. (n/m) - MixManMash 13:24:54 06/18/21 I am surprised that no one has said “used oil analysis” - ConVerTT 08:21:25 06/18/21 Truth. (n/m) - MixManMash 13:25:09 06/18/21 Yup. 13 years of UOA moved me off M1 0W40 and - vorpalZed 17:33:11 06/18/21 Is that just for your track Z? (n/m) - itsa300zx 17:59:21 06/18/21 Yup, I’ve spun bearings @ the road course and now pay - vorpalZed 18:03:23 06/18/21 Greg at SZ recommended 20w-50 years ago...> - 5150Z 11:29:31 06/18/21 This - platinumist 11:39:56 06/18/21 Yep, Seb basically told me the same thing recently - outkaZTT 23:28:30 06/19/21 Castrol 5w50 Supercar ..cheap alternative? - Z Force1 12:38:50 06/18/21 Mobil1 5W50 is hard to find but also great (n/m) - Polishzx 17:00:38 06/18/21 Or 10W-60? (n/m) - Tanley (ATL) 19:52:04 06/18/21 Castrol is crap in the Z (n/m) - FrozTTy 07:38:14 06/23/21 Data to backup this claim? (n/m) - MixManMash 07:43:03 06/27/21 Re: How long have your bearings lasted with High HP? - Mike@ZSpeed 13:39:27 06/19/21 I have a few UOAs for both M1 15W-50 and RP 20W-50 on - Tanley (ATL) 09:26:12 06/20/21 Re: I have a few UOAs for both M1 15W-50 and RP 20W-50 on - Z Force1 19:34:05 06/20/21 I have rebuilt and replaced the bearings 4-5 times - MezgerTT 23:42:49 06/27/21
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