No any Warranty after purchased in TEC?

Yes

 

You might get lucky if their is a lemon law in California on used commercial vehicles but it don't sound good

 

Review your sales contract. It should state if you purchased a truck that is in "As - Is" condition.

 

I had a used truck that had a warranty on the engine and I had lots of warranty work done. Even after the warranty I still had trouble with the engine. This was a Detroit engine. It's a used truck and like most they are sold AS IS. That's it unless you have some extra warranty.

Google California lemon law and you might get lucky. You can keep fixing the truck and hope it works out. I spent $19,000 in repairs after the warranty ended and then had emission box go bad and they wanted $12,000 to fix that. That's was it for me I gave up.


It up to you if you want keep repairing the truck or see if any hope under lemon laws. Your oil should not look like water unless you been adding coolant

I looked into lemon law in my state and nothing applied to trucks and it was almost impossible to even do anything even if you could prove it because I would have needed to hire an attorney.

 

So you bought the single most important piece of equipment for your business and didn't spend the few dollars on an oil sample? Did you even take it to an outside mechanic to do an inspection, hook up to the computer for codes, etc? Not even going to mention doing a dyno.

Or did you see "Oh, shiney! I must have!" and buy as-is without looking at the mechanicals?

 

The Coolant in the oil is coagulating in the filter, that is why your oil pressure is dropping. Since this has occurred multiple times because you keep running it your bearings are shot now as well.

Your head gasket may very well be the source of the Coolant leak (several things can cause water in the oil) but that engine needs an inframe now to be right again.