Castrol Syntec 0w30 European Formula Opinions?

[Guest dejacky]

I just switched from Mobil 1 10w30 synthetic oil to Castrol Syntec 0w30 European Formula "Made in Germany" synthetic oil after reading a few positive oil analysis results and favorable reviews. The car feels smoother overall and seems to start easier. What do you all think of this oil compared to Mobil 1 10w30 synthetic (that seems to be the norm for toyota JZ turbo cars)?

[Wez]

Isnt 0w30 a bit thin

[Kranz]

0W30 is too thin for a highly stressed 'older' design engine like the supra.... especially when it was designed for 15W/40.

 

It may not cause any problems if oil temperatures are on the lower side of warm, and the engine isn't put under high load. Turbo bearings may also be ok.

 

But if you drive hard, is it worth the risk?

 

10W/40 was my lower limit for the Supe engine. My old sh*tbox Citroen gets 5W/30 for economy

[Guest dejacky]

0W30 is too thin for a highly stressed 'older' design engine like the supra.... especially when it was designed for 15W/40.

 

It may not cause any problems if oil temperatures are on the lower side of warm, and the engine isn't put under high load. Turbo bearings may also be ok.

 

But if you drive hard, is it worth the risk?

 

10W/40 was my lower limit for the Supe engine. My old sh*tbox Citroen gets 5W/30 for economy

My Lexus manual (2jz-ge engine) states to use synthetic 5w30 oil. Where does it say the 2JZ engines were designed for 15w40? Castrol 0w30 European Formula "made in germany" is a PAO synthetic (Group 4) oil...Mobil 1 10w30 synthetic is a Group III hydrocracked dino oil. I plan to do oil analysis on this new castrol stuff after 3,000 miles just to see if it's worth it. I've been using Mobil 1 10w30 synthetic for several years prior. Also reading this article helped convince me to try this new Castrol 0w30 stuff: http://www.supramania.com/aehaas/