Hi everyone,
New to this site,Just bought a 2006 XLR with 11,800 miles.I want to change oil but don't know which one.Amsoil,Redline,Royal Purple...I 've used Mobil 1 on all my cars but read Amsoil is the best.Your views appreciated....

Mobile1 is the preferred lubricant.

CC :cheers

I'm with CC!!!

Mobile 1 :thumbs :thumbs :thumbs

I agree....the factory recommends Mobil 1 so why flirt with an unknown by going to some snake oil that is highly touted but not necessarily tested IN THIS APPLICATION. If it ever happens that you need major engine work under warranty or slightly over the warranty period, you have a strong case to make if you have done all the required oil changes and used the FACTORY RECOMMENDED LUBRICANT! Regarding "miracle" or what is known in the trade as "snake oils"....lubricating oils are a highly competitive market and a significant source of profit to the major oil companies. I seriously doubt that the major oil companies would not be producing the very best oil they can. When ever I am tempted to play loose and fast with the recommended items in the owners manual, I try to remember that GM has spent millions on some of the best engineering talent in the business to build a car that will get the best possible fuel mileage/reliability/value combination they can. Most of us have purchased a XLR because we felt that it was a well designed as well as beautiful car...this combination doesn't occur by chance! Some good engineering goes into it and I for one am not prone to mess with the result with untried ideas.

I had a good laugh recently when one of my friends foolishly purchased one of these "performance chips" for his Volvo. After paying $59 for it and not seeing any improvement in anything...power or economy, he took it apart and found that this $59 "chip" contained nothing more than a single resistor!! No magic integrated circuit, nothing but a simple resistor. Now don't you think that the Volvo engineers would have figured out that this resistor would do all of these wonderful things if it was possible? Let the buyer beware!

For another opinion, I use Amsoil. Is it better, I really think so, is it as good absolutely. As far as GM engineering, Lets look at that. First, let me say I absolutely love this car. But The 04 had bad radiators, bad top sensors, bad water pumps, and many other other design flaws we all know of. They have re engineered all of them on the newer models and upgraded them on the older models when they fail. My point is they are far from perfect. Just because they recommend Mobil 1 does not mean it is the best for the car. How about the computer recommended drain time. I doubt any of us think it is a good Idea to wait to change oil till the computer tells us to. We change it before. Mobil 1 is a fine oil. I believe Amsoil is better just from my research. By the way I don't sell it. Just another opinion.

Many or even most of you probably haven't been made aware of this:

http://www.gmdexos.com/home.html

I believe it will also cost less!

Many or even most of you probably haven't been made aware of this:

http://www.gmdexos.com/home.html

I believe it will also cost less!

Lower cost would make sense since GM is now providing Premium Care on all new 2011 Cadillacs (not sure about other GM vehicles) and that has to add to their cost while reducing income from customers.

It would be interesting to know how Dexos compares to Mobil 1 and other products on the market. .. and what is unique about Dexos. Also it appears that Dexos is a minimum requirement spec like other classifications currently on oil rather than a 'brand' of oil. The referenced site indicates it is 'licensed' to several oil companies.

I remember from my days of driving Porsches that the Porsche factory approved or qualified different oils for use in their cars by testing the oil in a 911 engine on a test stand runing at full or near full throttle for a minum run time in hours.