just put in some amsoil 0w-30 in my car

[4drmadness]

hey guys just put in some amsoil 0w-30 in my car. how often do you think i should get an oil change? amsoil recommends like every year or so? what do you guys think would be the best?

[smockers83]

http://forums.g35club.org/zerothread/395067

[BrandAidDesignG35]

Yeah, that sounds good, sometime in 2010, Please that stuff is not magical, Jacko will die if he reads this.

[tollboothwilley]

I think I'd go 10K max while running that stuff. Make sure to check your oil levels regularly. Every time you fill up is recommended. At least every normal oil change interval.

What oil filter did you put on?

[joe603]

I wouldn't go much more than 4-5k or 3-4 months...

[Sentientbydesign]

I wouldn't go much more than 4-5k or 3-4 months...

That's a little "under-excessive" IMO. I'd push 7-10, BUT since Vivek's engine has quite a few miles on it, the synthetic will probably be black by 2k. Might have to change the oil early a few times before starting the extended drain intervals...That could be expensive.

[4drmadness]

yea that could get very EXPENSIVE, im just gona do it every 7.5 k.

[C-Kwik]

I ran into a great article about oils recently. Not sure which Amsoil oil they tested, but it had the highest total base number in the test which is regarded as the biggest factor in terms of oil life. But oil life is not the same from one application to the next. To determine your oil's useful life, an oil analysis would be key. If the OW-30 you are using compares similarly in TBN, then I'd expect it probably will last longer than other oils. The question then is how much.

In any case, here's the article about oils. Its from a motorcycle publication so it tends to be written as such, but they do test a couple of automotive oils for comparison and do discuss some of the differences they found. But much of the article is still quite applicable in concept and understanding. There are 2 parts so make sure you move onto the second part. I also recommend opening the slideshow of pictures from the second part as you can see some of the graphs more clearly which show some of the chemical make-up of the various oils tested.

http://www.sportrider.com/tech....html

[Jacko3]

4drmadness:

My good friend, have you ever fried food at home with old oil before? How does the food taste when you compare food fried with old oil versus one fried with new oil??? Food fried with new oil tastes better, eh? You lick all your chops and usually clean that plate with food fried with fresh/new oil, eh??? Thats right!

While vegetable oil and engine oil are entirely different in chemical composition, nonetheless, oil is oil---the fresher the oil the better it is for your car or in your mouth, in the long run as far as health of both body and engine is concerned--I have testament with my little nissan to this end. Your engine is the one tasting the oil to determine if it is old oil or fresh/new oil. And, as I said earlier, new oil tastes better. Don't you want your engine to say, mmmmmmmm, delicioso????

Just as I won't deny my taste buds fried food with new oil, i will not deny my engine new oil either. Thus, 3,000 miles or less, whether that oil was made in heaven or not, is the max for me.

Old oil, whether in the frying pan or auto oil pan, scares me.

Oh, I promised to change my RP oil by 10th of January, 2009. Well, my Tech isn't working this weekend. So, next weekend, I am taking my car in to my car, when he will be at work, for another oil change, and this is with less than 3,000 miles on the RP oil I recently put in it in November, 2008.

[LeroyBrown]

I wouldn't go much more than 4-5k or 3-4 months...

yeah for real

[TurboDurbo]

I am running the same thing, I did a filter change at 5K and added a quart to top it off then changed at about 10K. In all honestly the oil seemed fine. I am using an Amsoil filter this time and will monitor it and possibly do 10K again, depends on if I go to the track in the spring/summer.