meant to reply this sooner, however work lately has been pretty crazy with no signs of it getting better

QUOTE(izso @ May 27 2015, 08:43 AM)
Sorry - I forgot clarify I'm using the Honda 0W20 fully syn oil on my Myvi.
I've used 0W20 on my Nissan but it wasn't that great cuz I'm a heavy footer. At the top end the engine response was lacking like it it was running on water. I don't know how to explain that in better terms.
Anyway if you're tracking the engine oil temp and pressure, you'll see that thinner oils run hotter when redlined and pressure is surprisingly higher when revved hard. You're better off with slightly thicker oils with good a base and efficient temp additives.
Personal experience on the Sepang track in a non-standard Wira NA :
- Pennzoil highest recorded temperature was 160 deg Celsius. Which is bad. Changed out the oil due to poor engine performance right after that track day.
- Rock oil maintained a constant 120 deg Celsius no matter how much I revved. Lasted another 1k km after that before I had to change the oil out.
- Ravenol highest recorded temperature was 130 deg Celsius too. Lasted 1k km after that track day.
- Lastly Adnoc Image highest recorded temp was 140 deg Celsius.
All using 5W30 weight and all fully syn. So just by looking at my 4 case studies above, the more expensive the oil the better it is for hard revving drivers with hot engines. (I guess)
highly unscientific I know - but instead of throwing around figures and facts at each other why not just share experiences? But the condition to this sharing is that the oil is minimally TUV or API certified. Otherwise the result from the oil may not be consistent.
Thanks for sharing

From my experience, on full track Sepang is rather interesting. In general may refer to below Experience/Q&A/UOA sharing
https://forum.lowyat.net/index.php?showtopi...entry72742217I only had Motul 300v 0w20 as that's the only i had for my Sepang experience and considering what it can offer, so far i have no plans on switching out.(there's news of 300V 0w20 bulk going on at zhapalang, if anyone else is interested, do let me know, i'm planning that bulk to execute around end of June)
my experience in general:
- Similar to Izso experience, engine *seems* to detune as afternoon session approaches/heat rises. I am unable to have solid evidence of this as i do not have oil temp sensor. It could very much be my own fatigue resulting in poorer track performance.
No such issue on the road ever, and i believe people who know me enough/seen my videos/postings would know i really trash the car/revs.
- while most people would have oil consumption... my oil levels at sepang would instead increase

suspect due to the viscosity of the oil, and the extreme temperatures the engine go through, it seems like motul's double ester reacts in a way similar to how almost all atf would: expand upon heat.
- while i have no oil temp readings, water temp for the car remained below 50% throughout any given time even in sepang and even after i experienced the supposedly engine "detune".
- i personally believe engine temperature and pressure is not the sole indication of how your engine performs nor how much it was wearing.
so long it's as rev happy as ever and having minimal wear, slightly higher engine temperatures/oil pressure should be acceptable.
Experiences are always appreciated, however if you can further back them with UOA or more solid information, that would be perfect!
in other words, why not both?!

and i wish this will be the future direction for everyone so it wouldn't be just a fan based bias (well, admittedly this could never eliminated completely. such as intel or nvidia vs amd, even when solid numbers are around) or just "oil VERY SMOOTH!" comment.
side note: how would one tell if an oil is really TUV certified? in fact, i don't think a huge majority of engine oil manufacturers bothers with TUV albeit i know that their directories are query-able. (that is the case for electrical appliances/tires anyways)
for API, almost all racing oil are no API certified due to their added additives which will not mean the latest SN environment requirement/concerns.
for one, 300V is NOT API certified