Just curious how many people use syntheitc oil.

used it in both my previous mustangs, just got my first oil change in the truck, probably will make the change to synthetic within the next 2 or 3 oil changes. used mobil 1 in the mustangs.

My Shelby Z's, R/T and now my SRT-4 have all gotten Mobil 1 synthetic. My Roadrunner gets Castrol GTX 20W50, because the engine doesn't have enough mileage on it to switch to synthetic yet.

Mobile 1 comes as factory fill in the Dodge Viper and SRT-4, and they advise using it afterwards. IMHO I think Amsoil synthetic has better test results, but it's really a matter of personal choice. They're both good products.

My first oil change today with 2400 miles and went with castrol syntec...............(also the first vehicle I ever used synthetic on.....ever)

There are some test results on the internet of different oils...go to the "Google" search engine and look under synthetic oil if I remember right. They weren't sponsered by any oil company and the results may surprise you... the syns beat the dino oils hands down and the top 2 were Amsoil and Mobile 1. As a general rule, ANY syn that is API certified and meets your owner's manual specs is better than dino oil. Just make sure it's 100% synthetic and not a blend.

Theres no comparison between conventional and synthetic oils, synthetics win hands down in every way..........except price.[sm=smiley36.gif]

I got hooked on synthetics about 20 years ago when I started using them in my off-shore boat engines,and I have used them in everything since! I get 600 hrs on big block Chevy's that were only going 250-300 with dino oil! At $10000. per pair,per rebuild that makes a big difference!!![sm=smiley32.gif]

Amsoil here. My Uncle became a dealer and I was his first customer.

I didn't go the "dealer" route (at least not yet), but opted for the "preferred customer"...saves some $$ considering I'll be using 20+ quarts a year, not counting their other products.[&:]