Air temp on something contacting coolant wont matter a single bit.
The o'rings are likely a simply set due to running at their upper temp for over 100k
Replace with Viton and forget for the next 100k
There are two large water hoses that enter the thermostat housing, these have the usual spring clamps,,,
BUT have O RINGS near the ends.. both of mine were "square" and hard and leaked...
I think you are right, Graeme, about under acoustic cover air temps..
"How long since you've visited The Good Oil?"
'93 V8 Rossi
'97 to '07. sold.
'01 V8 D2
'06 to 10. written off.
'03 4.6 V8 HSE D2a with Tornado ECM
'10 to '21
'16.5 RRS SDV8
'21 to Infinity and Beyond!
1988 Isuzu Bus. V10 15L NA Diesel
Home is where you park it..
[IMG][/IMG]
Air temp on something contacting coolant wont matter a single bit.
The o'rings are likely a simply set due to running at their upper temp for over 100k
Replace with Viton and forget for the next 100k
 Swaggie
					
					
						Swaggie
					
					
						I fitted 45mm x 3.5mm Viton 75 to my top hose but haven't needed to replace the lower seal as that is restrained so can't move, unlike the top fitting that moves with engine movement.
MY21.5 L405 D350 Vogue SE with 19s. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
VK2HFG and APRS W1 digi, RTK base station using LoRa
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