10w-30 conventional oil with best HTHS?

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tai

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OK, I know Castrol GTX and Pennzoil Purebase 10w30 have a HTHS rating of 3.1. Are there any conventional 10w-30 oil that does better? For that matter, are there any ??w-30 that does as well? Heck, are there any readily available synthetic 10w-30 oil that does better? (I know Amsoil does better.) Thanks!
 
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Citgo Supergard 5/30 3.2> Not a typo,it's sibling 10/30 is 3.0 and has a lower vi at both 40 and 100C Phillips Trop Artic Turbo 10/30 3.2 The Citgo 5/30 blend is 3.3 and the 10/30 is 3.5 The Mystik 10/30 Pao blend is 3.6,newer base stocks,old SH specs or additive packs Most low cost 30wts are at the 3.0 3.1 mark. Not these. I am not sure what the Motorcraft is,I have not received the updated specs yet. Of course there are some HD multigrades and straight wts that will give good numbers as well. [ February 21, 2003, 06:27 PM: Message edited by: dragboat ]
 
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quote:
Originally posted by tai: OK, I know Castrol GTX and Pennzoil Purebase 10w30 have a HTHS rating of 3.1. Are there any conventional 10w-30 oil that does better? For that matter, are there any ??w-30 that does as well? Heck, are there any readily available synthetic 10w-30 oil that does better? (I know Amsoil does better.)
Mobil 1 5w30 and 10w30 have an HTHS of 3.2. Castrol Formula SLX 0w30 has an HTHS of 3.6.
 

Patman

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I was looking at the specs for Pennzoil's 10w40 and it has a 3.7 HTHS, and at 13.5cst it's a thinner 40wt, so it could be substituted for 10w30 in a lot of cars.
 

tai

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quote:
Originally posted by Patman: I was looking at the specs for Pennzoil's 10w40 and it has a 3.7 HTHS, and at 13.5cst it's a thinner 40wt, so it could be substituted for 10w30 in a lot of cars.
I may have to give that a try. You seem to really like it, from your other posts, so it must be good. [Smile]
 

Patman

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quote:
Originally posted by sprintman: Patman/Johnny is that 10W40 Purebase? I like the HTHS figure.
Yep, it's the Purebase stuff. I'm interesting in seeing how this does in a short interval, if it thins out like many other 10w40s do. Considering it's a thinner 40wt, I'm inclined to believe it doesn't use as much VII as other 10w40s, so it should theoretically stay closer in grade longer.
 
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Patman here is you some Pennzoil 10/40 [Smile] SAE 10W-40 ULTRA TURBO -SEMISINTETIC- API SJ/CF/EC * ACEA A3/B3 (98) * VW 502.00/505.00 (1/97) * MB 229.1 * BMW Special Oil * Porsche PE M499: 12x1 Litri; 4X4 Litri; 60 Litri Ulei de motor semi-sintetic ce oferă lubrefiere optimă motoarelor moderne pe benzină şi diesel, pentru autoturisme şi autovehicule comerciale de sarcină mică. ULTRA TURBO a fost testat la motoare cu turbo-alimentare şi este compatibil cu catalizatorii. Îndeplineşte şi depăşeşte cele mai înalte standarde de performanţă stabilite pentru uleiurile de motoare pe benzină. Caracteristici: -Protejează motorul la porniri pe vreme rece; -Excelentă protecţie împotriva uzurii şi coroziunii; -Economie de combustibil demonstrată; -Aprobat de PORSCHE şi BMW; -Pentru toate autovehiculele de pasageri MERCEDES-BENZ; -Aprobat de VW Proprietăţi fizico-chimice: SAE ....................................................10W-40 Densitate (15,6 °C) ............. kg/l ............0,8715 Vâscozitate la 100 °C ......... cSt ............14,9 Vâscozitate la 40 °C ............cSt ..... ......101,6 Indice de vâscozitate .............................153 Punct de aprindere (ASTM D-92) .............210 °C Cenuşă sulfaţi ............... %greutate .......1,09 T.B.N (ASTM D-2896) ... mg KOH/g ........8,8 Punct de curgere .................°C ...... ......-33.
 
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Tai, The Schaeffers Supreme 7000, 5w-30 and 10w-30 have the best high temp specs of any petroleum oil or synthetic blend I've seen. Both have HT/HS of at least 3.5 Cp @ 150C, so they meet the ACEA A3 specifications. Most petroleum xw-30 oils have HT/HS in the 2.9-3.2 Cp range in order to optimize fuel efficiency. I don't agree with this approach and think it's better to meet the more stringent ACEA specs to prevent wear under high temp and high load conditions. TooSlick
 
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