Seems like I lost a very small amount of coolant for the resevior tank but it could be that I have been using the heater recently since its winter.. so there may have been some air trapped there. I will update if I loose more coolant from the resevior tank, it still hasnt lost as much like before with the leak, its just a smidge bit below the max line now.

 

Does anyone know of any aftermarket, or other OEM radiator caps, that are all metal that work well on the IS 350?

I rather not buy the original Lexus plastic one if it fails in this short of a time period.

Thanks,

 

Autozone makes an all metal one, Duralast 7037.

 

anyone on here had trouble with cap breaking off in alloy housing ,it seems to have welded itself to alloy and is proving difficult to pry out