if your coolant level is low, and you can't find any external leaks then it only got one other place to go

Normally that sealer **** they sell won't help if you have a bad coolant seal, but there is one on the market, it looks like a bottle of black liquid and it has theese pellets at the bottom that look like mouse poop. that stuff will work for a while. I put a bottle in my FD when one seal started going bad. I got 2 more years out of the motor, beating the **** out of it anywhere from 12-18 psi of boost. AND THEN SHE DIED

 

wouldn't the check engine light come on, if the O2 sensor was bad?

And if your Injectors were leaking wouldn't you be running lean instead of Rich, since you're losing fuel.

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