Likely culprits for this is usually air flow over the radiator, coolant flow through the radiator, if it has never had a change or mix of coolant, should be ok. Clean externally first then retest, I generally clean them with a coil cleaner from air conditioners, it's a high foam designed to push the crap out,
Apart from that, slipping trans on the hill, but most likely air flow, if there dirty enough you would get a bit more heat in the egt. The problem with knowing how hot is too hot with them is not knowing the location. I'm pretty sure if they are fitted the car will go limp if they are exceeded. But that's just my guess
ChatterBox
SubscriberAll I was suggesting that in case of coolant leaks, lots of towing and the potential that those conditions may have caused abnormal coolant concentration or levels, that at least it be checked, and if required, changed as a preventative measure. Coolant is usually 8 year 500,000 km life for these cars.Originally Posted by Redback
Excellent, thanks. Not aware of this product I will search around.
I would use a high alkali compound, they clean the actual fins aswell, I used to get a can from Ashdown Ingram with a snake on it, can't find it online, but Bunnings will have something, a cheap throw away garden sprayer is a good option, if you have mixed coolant at some stage, I would flush the coolant system with cummins restore "plus".
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