This is exactly why I typically run Castrol Syntec 0w30. The UOA's seem to be pretty good for my Z so far.

M1 0w40

:thumbup:

use wesson canola oil or ***-troglide

man a guy makes on quick mistake with some spelling and you guys have the time of your life with it haha.

GC 0w30 is good stuff too. My other choice were I not running Mobil1.

:tup:

I've been using Mobil 1 since my first oil change. If it's good enough for NASCAR motors, then it's good enough for my Z.(btw when I was told at the dealership that an oil change with Nissan ester oil was $125.00,I said to myself nfw will I pay that much for an oil change- it was a ploy to sell me the "extended warranty package" . That too was a nfw!

Not all motors are engineered the same, hence the variety of motoroil on the market.

Your nascar comment is borderline retarded. No offense if you are actually mentally handicapped. I love retards.

LOL I agree witht he above statement in reguards to engine design. New mustangs run 5-20 and z's are running 5-30 or 0-30 is good too. Just because it works great for american won't mean it will work for imports. I am considering getting my hands on some motul.

Also, when considering UOA's you really need to note at what mileage it was taken. Comparing one oil on a car at 1000 miles to another oil at 10,000 doesn't really tell you much about the oil.

mobil 1 0w40 is the only true synthetic from mobil and i have used it for 78,000 of the engines boosted life.

I bring my own oil and filter and have an oil change shop drain/fill mine. I use what ever quality filter I can find Mobil or K&N usually. I have been running nothing but Amsoil and it doesn't burn an oil with nearly 9K miles.

I can't imagine that Mobil 1 would hurt anything. I worked with a master mechanic in FT Worth that used would save the Mobil 1 from one particular custumer. He was an retired Navy Admiral that babied his 350 and changed it every 2500 or earlier. The tech would run it in his souped up GTP Grand Prix. Then save it run in his wife's CTS. for 3K each. He never had a problem. The first time it was drained it still looked like new. The second time it was still golden.

My experience in my 09 was castrol edge. When I purchsed the car it had nissan ester. When I switched to castrol edge, I noticed my temps were lower by about 15 degrees and the engine sounded smoother.
It seems the oil that has been proven by others on here to be the best is royal purple. Some have even claimed hp increases with RP. I will be trying RP for my 2011 when I hit 5k miles. Though I ran mobil 1 in everything except my G37 and Z. I wouldn't recommend it on the Z only because so much conflicting info. Better safe than sorry. From research I like the following three as safe choices;
1. Royal Purple
2. Casrol Edge
3. Nissan Ester- only because its OEM.

Royal purple has more conflicting info than any of them so that is a moot point.

Tell ur master tech to stop being a chiseler and buy new oil. Why wouldn't u run each car for 5-6k on fresh oil vs draining old and filling another car. Sounds like this guy just didn't give a f about his wifes car.

He has forgotten more about cars that most us will ever know.It is advertised as 15K mile oil. He was taking it out of a pretty new car. Putting in a 50Kish mile motor then in his wifes car. For a total of 9K of use on the oil. He was getting good oil for FREE. He knew all the cars involved a how they were driven. It wasn't that risky. I am not saying it is a good idea for everyboy to do this. I was just making a statement as to what a very good mechanic thought of Mobil 1.