87whiteconquestblack Posted December 4, 2008 Report Share Posted December 4, 2008 im thinking about gettin my oil changed to a synthetic brand new motor prob has 1,000 miles on it. for the break in oil i used shell rotella since it has alot of zinc. im thinking about switching to like a 10 w40 mobil 1 but i read this article this guy and now im not sure what too do read it and let me know what you guys think Well, to start with, the oil viscosity you are using deals a lot with the temperatures your car is faced with. A multi grade oil like 10w-30 is an all around good choice for those of us blessed with not having freezing temperatures. I would most definitely stay away from synthetic oils as a motor oil for turbocharged cars. Synthetics contain PTFE (Teflons) that can be damaging to the main turbine bearing. Your turbos spool at extremely high RPM, thus generating a lot of heat. Its not uncommon for turbos to spool as high as 50,000 RPM. At extreme heats, the Teflons actually seperate from the other ingredients in the oil, and solidify into particles, which of course is not condusive to long turbo (or engine) life Link to comment Share on other sites More sharing options...
Hoosierquest Posted December 4, 2008 Report Share Posted December 4, 2008 Thats new to me. Iv always been told synthetic are better for turbo motors because of their ability to handle the high heat from the turbo. Ive run a synthetic blend in mine for years with out any problems. Link to comment Share on other sites More sharing options...
scott87star Posted December 4, 2008 Report Share Posted December 4, 2008 He's confused, modern synthetic oils do not generally contain PTFE and turbos spin up in excess of 100,000 rpm. According to my "big" 16G map sitting in front of me the compressor is still in its efficiency island at 145,000 rpm. PTFE was an additive in all types of oil years back and marketed as a friction reducer but it did create problems as described and was dropped from most formulations. Not sure you can even get it as an additive anymore. I have used synthetics for 20 years or so, most brands at one time or another, right now I'm using exclusively Amsoil in all my vehicles and very happy with the performance and economy. I use oil testing to tell me when to change, its usually once per year with filter so its cheaper and less work than blindly changing oil every X,XXX miles and I highly recommend this approach. Besides telling you when to change the oil you get other useful information and they can even tell you when bearings are starting to wear. Scott Link to comment Share on other sites More sharing options...
CondorTSI Posted December 4, 2008 Report Share Posted December 4, 2008 (edited) I don't see why you would worry about using Mobile 1 syn., cause if those turbo BMW's, and High-end AMG turbo Benz use it from the factory...then I would use it for every oil change. First time actually hearing about Teflon being used in oil tho, maybe I need more into it. Either way I think you'll be ok with any Synthetic oil. I just prefer to use Mobile 1. Edited December 4, 2008 by CondorTSI Link to comment Share on other sites More sharing options...
jahjah Posted December 4, 2008 Report Share Posted December 4, 2008 He's confused, modern synthetic oils do not generally contain PTFE and turbos spin up in excess of 100,000 rpm. According to my "big" 16G map sitting in front of me the compressor is still in its efficiency island at 145,000 rpm. PTFE was an additive in all types of oil years back and marketed as a friction reducer but it did create problems as described and was dropped from most formulations. Not sure you can even get it as an additive anymore. I have used synthetics for 20 years or so, most brands at one time or another, right now I'm using exclusively Amsoil in all my vehicles and very happy with the performance and economy. I use oil testing to tell me when to change, its usually once per year with filter so its cheaper and less work than blindly changing oil every X,XXX miles and I highly recommend this approach. Besides telling you when to change the oil you get other useful information and they can even tell you when bearings are starting to wear. Scott how do you test your oil? Link to comment Share on other sites More sharing options...
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