Originally Posted by mustang
The Stant car caps at some point in time changed and the rubber seal isn't as long as it used to be which means it wont hold pressure on the tiger radiator and will piss coolant . Not sure about the Nissan caps
If you want trouble free
get the Triumph radiator cap
Stant Cap on the left Triumph OEM on the right ......what do you notice different ?
Thanks, I read that about the Stant cap, also learned today that the Napa 7031406 that worked well is discontinued, none available in any local store per Napa. Tried to buy the Triumph cap however the local dealer does not stock it but should...FWIW bought a Triumph and a Suzuki and wrongly thought having local dealers would help but they are nearly useless for parts, don't even stock basic stuff like gaskets. May try the Autozone 7516 (specd for Subaru 2.5 and Nissan 300ZX. 1.1 bar) and see how that works or better yet an OEM Made in Japan Subaru cap if the dealer has one....
(BTW that photo link does not work, requires a login)