Subject	I'd still it 5w-40 or 5w-50 over 5w-30
Posted by	Polish on September 12, 2018 at 4:09 PM
	This message has been viewed 241 times.
In Reply To	unfortunately, their 5w40 is not HPS series.... posted by TTkeeper on September 12, 2018 at 01:18 PM
Message	Check ZDDP (Zinc) levels between the two formulations, if product sheets are available. That is the one main thing additive to be concerned with, you want the most possible.
Follow Ups	RP 20W-50 HPS motor oil...still a fave with members ? - TTkeeper 10:09:29 09/08/18 I would go with a 0W50. Less wear on startup. - MixManMash 10:12:13 09/08/18 what about summer heat protection..higher wt ? - TTkeeper 10:19:57 09/08/18 Thick 50 weight oil is exactly what you want for heat - Polish 13:31:36 09/08/18 RP makes a 5W30 in the HPS formula...ok for winter? - TTkeeper 13:13:27 09/11/18 That would be fine, but I do think they make a 5w40 - Polish 19:16:01 09/11/18 unfortunately, their 5w40 is not HPS series.... - TTkeeper 13:18:05 09/12/18 I'd still it 5w-40 or 5w-50 over 5w-30 - Polish 16:09:28 09/12/18 What temperatures were you starting your Z in - Polish 13:37:01 09/08/18 I was running 15W50. Temperatures mostly in the 70s to 80s. - MixManMash 09:18:49 09/09/18 What did the oil analysis show on the 15W-50? Any - Tanley (ATL) 13:25:28 09/09/18 Yes. Wear elements had gone down. A lot of wear happens - MixManMash 14:59:23 09/09/18 it keeps my lifters from chattering (n/m) - zantar 10:31:01 09/08/18 Rotella T6...cheap and good (n/m) - The Hawk 12:50:29 09/08/18 I 2nd this. Have been running T6 in all my cars for 5+ years (n/m) - WhiTTe Z 09:39:05 09/11/18 Any problems with your cats in those 5+ years? - Mr.Stacy 10:23:50 09/11/18 No cat problems to report (n/m) - WhiTTe Z 16:54:25 09/12/18 I still recommend Mobil1 5w-50 (which is more like a 5w-45) - Polish 14:24:48 09/08/18 For the summer I use Liqui-Moly 10W60, just switched to - RAGTPZ 16:56:29 09/08/18 Still running 20W50 RP per SZs recommendation (n/m) - ZXRider 17:08:16 09/08/18 Did they give info/reasoning as to why they recommended? - Waco300zx(DFW) 09:39:03 09/11/18 Yes (n/m) - Piranha 20:37:10 09/08/18 I was, but didn't see much difference in the oil - Tanley (ATL) 13:55:07 09/09/18 When cold, the 15W50 will pump up faster than the 20W50. (n/m) - MixManMash 15:01:42 09/09/18 How cold? below 32 deg. F ? (n/m) - TTkeeper 17:45:46 09/09/18 Even 90 deg. F, 15W50 is going to pump up faster than 20W50. (n/m) - MixManMash 18:29:41 09/09/18 The thicker oil creates better film between the parts - ZXRider 11:31:19 09/10/18 Not necessarily true. I have seen 0W40 stick to surfaces - MixManMash 18:53:42 09/10/18 Re: RP 20W-50 HPS motor oil...still a fave with members ? - sasha 13:43:31 09/11/18 After doing oil changes on my M3 I'm a fan of liqui moly - SkiFly01 10:23:23 09/12/18 Some research I'd done... - Barry (NJ) 14:07:35 09/13/18 That ash content of Mobil 1 makes me nervous... - TTkeeper 16:50:55 09/13/18 Well, the blanks in the chart are not zeros... - Barry (NJ) 09:08:25 09/14/18 You are correct. As engine temps rise, oil viscosity decreas - Polish 13:20:15 09/16/18
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