srt20
Active member
I guess for me I was shocked at the compression of the sled after 7000K miles (150). Maybe it happens more often than I thought but I expected the dealer to say compression of 120 or worse... Is this impressive as I think or does this happen often? Assuming the chemist does know what he is talking about, a fail wouldn't guarantee a problem, it is just not one of the better oils he would recommend. I decided to buy the cheapest passing oil and got better results than expected. That is why I am interested to hear other stories than just mine. For example Sea and Snow JT4 is about $22/gallon. If everyone has as good a result as mine then it seems a good choice - chemist or no chemist. If others say they blew there motors on it then I will be a little more worried.
Compression numbers can vary widely from tester to tester. Also amount of oil makes a big difference. Hot or cold engine makes a difference. Not saying your engine was or wasn't in excellent condition just saying psi numbers can easily be skewed, intentional or not.
I know of no one that has good solid evidence that their 2stroke burned down or blew up or whatever because of the quality of the oil used. If you have an oil brand picked out that you are comfortable with, then you are probably good to go.