# How Reliable is your SR? **URL:** \ **Category:** SON240sx Automotive\ **Created:** [December 16, 2006, 10:32pm UTC](https://forums.speedlife.net/t/how-reliable-is-your-sr/102528 "2006-12-16T22:32:26Z")\ **Posts on this page:** 1\ **Showing post:** 32
**Author:** ![TM1](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/tm1/32/5517_2.png) [@TM1](https://forums.speedlife.net/u/TM1)\ **Post date:** [December 20, 2006, 8:54am UTC](https://forums.speedlife.net/t/how-reliable-is-your-sr/102528/32 "2006-12-20T08:54:15Z")
> [@Callout!](https://forums.speedlife.net/t/callout/10653/87): > > I’m sure everyone can say the same thing about the oil they use, or they would never use it, I know when I change my Mobile 1 I have never seen anything that would compromise my decision about the oil, so far in 3 yrs its the same formula that I use and will continue to use unless someone can show me facts about synthetic not being good for your engine or reg. Oil being just as good. If you do circuit racing, I believe that a multiviscious oil, is the wrong oil to use… Most “high performance engines” racing competitively, are not running a wide range multiviscosity oil… The reason behind it, is that those detergents and additives to make an oil multiviscious actually cause oil to coke in turbo cars as they also bring down the burning point of the oil… --- _[View the full topic](https://forums.speedlife.net/t/how-reliable-is-your-sr/102528)._