Radiator cap pressure

DC5RS

DC5
Messages
1,751
Hello, I have tried to search for the answer but couldn't find anything related so starting a new thread.

What is the difference (yes I am a car noob) of installing a 1.3 pressure radiator cap instead of the OEM 1.1? is there any danger? why all aftermarket companies make 1.3 instead of 1.1?

I purchased a JS radiator cap but just noticed it was 1.3.

Cheers
 
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