well take the amount of gallons in your tank and compare to the gallons the bottle treats

 

oreilly auto has lucas synthetic blend two stroke oil i use and its only 6.50 a quart . It seems to be working good. my kawasaki dealer reccomends yamalube for its kawasaki 2 strokes.

 

yeh lucas oil's good too

 

i use the wally world stuff just fine. why would somebody make an oil that would do irreparable damage to a motor. as long as the motor is TWC-3 rated it is fine. if you have a heavily modded machine then it would be wise to step up to a name brand oil like lucas or yamalube otherwise just stick with what works for the least amount of money