A while back I was checking out Matrix Owners and there was a 2nd gen 2.4L Base owner who installed a TRD radiator cap (#PTR04-00000-03) on his Matrix. I immediately added this to my list of future mods for our Vibes because the TRD cap is white with red writing which would look a lot better with the color scheme of our engine bays than the current OEM yellow. After researching the
TRD cap on eBay though, I noticed that the OEM 2009-2010 2.4L radiator cap says
0.9 on the right side, while the TRD caps says
1.3. From what I've read, this has something to do with the pressure of the cooling system. What I am wondering is, will it really make any difference using the TRD cap with a higher pressure or will I be risking any damage to our Vibes? I would love to add this little mod to our Vibes, but I definitely don't want to do it at the risk of causing any damage. Thanks in advance for any help, info, opinions, etc.