Switching to Synthetic Oil on Used Car?

[zrayr]

Originally Posted by bobcowan

Not true at all. It's a trick of marketing types and lawyers that make you think M1 is synthetic.

A true synthetic starts with a PAO base stock, no dino oil. Then it's further refined, and the package is added. The key is there is no dino oil.

Oils like M1, QS, etc start with standard dino oil. Then they refine and add until it meets the legal requirements as established by the courts to be allowed to use the term "synthetic". It's a marketing trick, don't fall for it.
........"

the forums on http://www.bobistheoilguy.com/ are pretty entertaining, and no one takes it all too seriously......

http://www.bobistheoilguy.com/cms/in...tid=35:content

this one of the best lines: "...... over half of all NASCAR teams are using Mobil 1 technology; Mobil 1 is also a technology partner with the Vodafone McLaren Mercedes Formula 1 team....."

Z.

[Rare Iron]

OK, since nobody took me up on the question about whether or not synthetic oil is flammable, I'll tell you my findings (I thought this was interesting). I used to burn my drain oil back in the days when I was changing my oil regularly - the best & most environmentally friendly way to get rid of drain oil. Anyway, I could NOT get the syn oil to burn - no matter what! It would boil, but not ignite. I then tried burning a paper towel dipped in it, & it also would not burn. Then a few years later, I had my oil changed somewhere & paid extra for syn oil. Later when I got home, I tried the burn test & it lit right up. I figgered I got ripped off. Anyway, on my 300M from now on, I'll be supplying the oil at the oil change place.

And I have heard about syn oil finding leaks, or even "creating" them. Not sure if I believe the latter. Also have heard that it will loosen deposits inside a motor if there are any, & that could be bad. I'm still not 100% sure if I'm going to switch. On a new car fine, but I'm a little apprehensive on a 100k+ engine.