Just curious, is anybody running a 0w oil? I have consistently ran 5w30 mobil1 since owning the car, but I have been interested in running a 0w for a while now. Less friction = more horsepower...which I like.

Anybody running it?
Brand?
Positive feed back?
Negative feed back?
Do's and Dont's?

 

The W only pertains to winter temp. If you want a lighter oil then go with 20 vescosity.

 

I just swiched to 0w-30 mobile 1 and i gained 1 mpg average.

 

I ran it for 1 oil change last fall. No issues, but one of the engineers on the forum reported some wierd cam phaser action with 0w-30 after it gets some mileage on the oil in some cases.

 

I understand running a lighter oil, but 0w viscocity naturally mean less friction. I would still run a 30 maybe dip to 20 but I am more concerned if the 0w oil can acually hold up to consistent high temperatures, since these cars can run 210-215 during "spirited"driving conditions, and summer is coming up.I have seen tests where 0w oils have gained nearly 10-15 hp over a 20w oil, and even 5 hp over a 5w oil.

How weird exactly? I just wonder if I ran it for 5k miles at a time how it would affect it? I am thinking of running AMSOIL or Mobil 0w30. Do these oils meet the required standards of our vehicle and warranty?

 

i add my own secrat ingredient in my oil, that **** is awesome, proved itself countless times. puts a film around the pistons and every other part the oil touches, there is pretty much no friction. Could only add it once the motor had 12k kms on it other wise it wouldnt allow the motor to break in.

 

The 0 only refers to the weight when the oil is cold. So the only benefit you'll have at that point is an easier start-up at cold temperatures. A 0w30 and 5w30 will both be within the range for 30 weight at operating temperature. Some fall towards the thinner side and some to the thicker side of the range, but they will both be within spec for 30 weight. So, I don't see how there would be a difference unless the 0w30 was borderline 20 weight at operating temperature.

 

idk, this is like my first brand new car. and i guess i just want to stick with the factory recommand spec, 5W30 mobil 1 extend performance gold cap.

 

I ran it in the G5 (Havn't had an opportunity to change the SS oil yet). Car ran better on startups when the oil was cold. After the car reached operating temps, it was the same as the 5w stuff.

 

I forget the symptoms exactly, but he said the phasers would hunt or oscillate at certain times when the oil had miles on it after it started breaking down. IIRC, they wanted the LNF to be a 0w-30 engine during design, but had the phaser issues. He posted it last summer or fall so my memory is fogged.

 

^^^What he said, you can go with 5w20 or 0w20 but the 5w30 is reccomended so just use that. The gains will be very small at best.

 

Yes what those 2 said.. The W only pertains to winter temps, and how well the oil flows at I believe 32 degrees, and the W actually means WINTER. So if you get a 0W30 vs 5W30, they will perform exactly the same at operating temps.

 

While we all drive the same vehicle we don't all drive them in the same manner or in the same condition. What might be great for one person's application might not work for another person.

You should go over to www.bobistheoilguy.com In additions to people's opinions you'll also get some hard facts about how certain brand oils are performing. There is tons of virgin oil analysis and used oil analysis that you can read over. There is a lot of people on that site pushing the boundaries of lighter weight oils.

To say an oil is 5W-30 means it falls within a range that is acceptable for that weight. Meaning you can have two oils both 5W-30 and one might be near the bottom of the range and perform more like a 5w-20 and the other might be towards the higher end of the range.

Also, you have to look at what you'll wind up with by the end of your oil change intervals. Some used oil analysis is showing that what starts out as a 30W oil is breaking down to almost a 20W.

You'll also be amazed to find out how many different oils are actually manufactured by the same parent company.

 

I do realize the first number is how well the oil holds up at colder temps, and the second is rated at operating temperature. I also realize that 30 weight performs the same at operating temperatures regardless of winter viscosity, but I had read somewhere regarding 0w vs 5w vs 10w and there was a some power gain with the 0w in comparison to the 5w, and likewise with the 5w in comparison to the 10w. I cant find the article right now, but I did find a similar article that shows 0w40 producing nearly 10 more HP than a 5w40 motor oil. It is 2 seperate brands, so it may not be too accurate. Take notice of the bp visco 5w40 vs mobil 0w40.

http://www.performanceoilnews.com/oi...nst_oils.shtml

Again, I will continue to search for the article where they compared different winter viscocities against each other, but this is the best I could find right now.

I appreciate the input people.

 

couldnt running a lighter viscosity oil such as 5w20 have an affect on parts like the valve lifters or variable valve timing?