sorry, but what do number plates have to do with cooling systems? maybe that should be in the "What did you do to your XJ today" thread (hint hint) :blah::blah::blah:

Cool number plates = cool jeep...

this is why we have a problem here we have knoledgable people being pissed of by people posting totaly non relevent crap in the tech info threads

Rodge, why the recommend minimum 44% mix? A lot a fellas are recommending and running 33% ratio for our hotter climate. A lot of engines, consisting of the same materials and marketed to Australia are running 33% and don't have any shorter life span because of it.

im not pissed off, was just a friendly reminder that we are discussing the xj 4.0L cooling system here - not other irrelevant stuff. adding those comments just makes it harder for folks to wade through the posts to get the info they really need. even my post here adds to it so i will state this one time only: lets stay on topic please. its all good so dont anyone stress over my comment! :cool:

as for the 44% figure - that is straight out of the FSM but as others have pointed out it may not be suitable for warmer climates. my choice has always been to run a 50/50 mix but that is just me. i suppose too it should be clarified what is 30% and what is 70% - the water or the coolant? lets make that distinction for those people who may not know (remember, this is an info page). also remember, my original post is PURELY my own opinion based on my own experiences and guided loosely by the FSM - i WANT you guys to share YOUR opinions and why you think they are plausible. That way a consensus might be formed based on shared experiences. if 30/70 works tell us why - i hear that number a lot too and may change my thinking if i hear a good reason for it. i guess also i am from a cold region so that number from the FSM rings true for my past experiences but like everyone, i learn something new everyday! suppose i should know better without being told but sometimes ya just go with what ya know! keep it coming guys! :cool:

Thanks Rodge... great run down on one of the most commented/posted/talked about topics regarding the good O'll XJ... for a new comer to the brand of JEEP, its certainly great to read your experiences/comments... Ive changed most things on my cooling sys even putting in new welsh plugs when I got the jeep last year and shes running great here in hot/humid Brisbane..runs at 97deg in most instances, never goes over 105 in crawling daily traffic...I use a alloy friendly 50/50 mix of NULON ULTRA COOL.. it contains no Glycol. Its formulated to keep rust/scale /sludge/corosion and electolysis away... seems to work well.. I removed the bulky plenium chamber box that sits on the intake and fitted a older xj intake hose to stop heat soak, also removed the lower skid plate.

thanks
Steve

This is why I'm staying out of this thread from now on. We have stuffed a totally good piece of info and picked the crap out of it...

Nice try Rodge..

I was thinking I should post Rodge's thread on a web page like Go Jeeps, so it can't be cannon fodder....