jad42485 said:I smell coolant on my 2003 range rover, i don't see any leaks under the hood, I've replace my coolant twice in a couple weeks. First off what kind of coolant should i use? what should i do?
I've seen a few people have had to replace hoses, but I've often wondered if the hose is just the weak part of the chain, and in reality something else is over pressurizing the system.Monty said:If you've not had the coolant hoses replaced by now check them as well, at that age it's worth changing them all or be prepared for them to start popping one by one!!!
Yes this is what is finally going to kill most of the ageing M62 engined L322s. The lack of periodic replacement of the hoses and other components in order for them to withstand the 92 degree operating temp pressure will show in engine failures on neglected cars. And since curing an engine failure can cost more than the total value of the vehicle this is no insignificant thing. Somebody should come up with a serial production of a thermostat housing that can take the regular thermostats so you can use a 82 degree one and run much cooler and less pressure. To the heck with that ultimate emission gain of the dual temp thermostat setup. The cats take care of that anyway with quite some margin. There is more value at stake in gaining years of vehicle reliability. Getting that dangerous pressure down should be high on the agenda. I have seen a custom machined job where an owner made his own housing. Get the bullet out of the Russian roulette barrel.I wonder if these cooling system problems partly stem from the use of an electrically heated thermostat in our Range Rovers. Without the intervention of the heating element, coolant temperatures up to 113 deg. C. are ‘allowed’ by the engine management system at part load in the quest for highest possible fuel economy/lowest emissions. Temperatures like that must be quite a test on the integrity of the cooling system, especially when it’s getting on a bit…..