Jonah Posted March 23 Report Share Posted March 23 Evening all i run my Spitfire Mk3 on Evan’s waterless coolant, the temperature gauge indicates that the engine is running really hot, this coolant runs at circa 10 degrees higher than other coolants. would a different rated thermostat give a more realistic temperature indication? Thanks Julian Link to comment Share on other sites More sharing options...
Steve P Posted March 23 Report Share Posted March 23 Thermostat won't make any difference to temperature or the gauge reading other than maybe dropping a bit when it opens.Is the engine actually running hot?. A digital thermometer can tell you. Senders also give quite variable readings because of the differing resistance of the modern offerings. I changed from waterless back to water/antifreeze when the whole lot gummed up the waterways due to contamination,it turned to jelly. Steve Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 24 Report Share Posted March 24 check the voltage stabiliser is giving a 10.5v pulsed output you may notice the fuel gauge is also reading higher as steve says some senders have wildly wrong setting. the thermostat controls the coolant flow and the radiator cools the engine output the type of coolant should not affect this operation , the fact this coolant can withstand a higher temperature than other coolants has no bearing on the stats ability to control things you need to check the readings are correct not look for scape goats ideas do some checks and let us know . Pete Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 24 Report Share Posted March 24 had there been any indications on previous drives ?? did you add the waterless stuff, have you eliminated any air locks etc. Pete Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 25 Report Share Posted March 25 and one other thing to note waxstats dont like to be boiled if the engine has overheated and blown out coolant the thermostat should be replaced on a mk3 82c is std. but once cooked they tend to go out of control . Pete Link to comment Share on other sites More sharing options...
Stratton Jimmer Posted March 26 Report Share Posted March 26 I use Evans waterless in both cars (Sixfire and GT6) and they both run at a normal temperature. As previously suggested, it may be either your gauge reading wrong or a bad thermostat causing your issue. Link to comment Share on other sites More sharing options...
johny Posted March 26 Report Share Posted March 26 As an aside, do you still have the overflow pipe and bottle on your cars? I would have thought them redundant with waterless coolant and should mean that topping up the bottle once in a while is no longer necessary. Of course a down side is that theres no longer a way to see the system is full without removing the rad cap... Link to comment Share on other sites More sharing options...
Colin Lindsay Posted March 26 Report Share Posted March 26 I was always wary of waterless coolant from the point of view of having more than one hose which went bang over the years, and had to top up from the roadside, so reckoned in my case it would be a waste with the standard of car I usually drive, and especially with the Herald system that Johny mentions and which I'm always topping up as part of a regular service. Link to comment Share on other sites More sharing options...
johny Posted March 26 Report Share Posted March 26 21 minutes ago, Colin Lindsay said: I was always wary of waterless coolant from the point of view of having more than one hose which went bang over the years, and had to top up from the roadside, so reckoned in my case it would be a waste with the standard of car I usually drive, and especially with the Herald system that Johny mentions and which I'm always topping up as part of a regular service. Thats the thing with waterless there should be no more hose bangs (or head coolant leaks either) as theres no pressure. For the same reason the rad cap never has to open to vent excess off to the bottle as the engine warms up... Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 26 Report Share Posted March 26 what worries me is with all these wonderful alternatives makes you ponder why on earth the engines have only lasted 50 years its a bit late to get paranoid about coolant i put most in the ....Must Have bin Pete Link to comment Share on other sites More sharing options...
Colin Lindsay Posted March 26 Report Share Posted March 26 3 hours ago, johny said: Thats the thing with waterless there should be no more hose bangs (or head coolant leaks either) as theres no pressure. For the same reason the rad cap never has to open to vent excess off to the bottle as the engine warms up... Hadn't thought of that, although my hoses usually wear and crack rather than explode through pressure; new ones are rubbish quality. So technically it doesn't matter what rad cap you use, either? Link to comment Share on other sites More sharing options...
Colin Lindsay Posted March 26 Report Share Posted March 26 Just now, Pete Lewis said: what worries me is with all these wonderful alternatives makes you ponder why on earth the engines have only lasted 50 years its a bit late to get paranoid about coolant i put most in the ....Must Have bin Pete It's like the guy who bought the parrot and the shop owner told him they live to be 125, if it doesn't, just bring it back. Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 26 Report Share Posted March 26 luckily my parrots wont live that long 20 if lucky the cockatoo got rehomed at 10 yrs old ....flying bolt cutters with the mind of a 4 yr old hooligan Pete Link to comment Share on other sites More sharing options...
johny Posted March 26 Report Share Posted March 26 7 minutes ago, Colin Lindsay said: Hadn't thought of that, although my hoses usually wear and crack rather than explode through pressure; new ones are rubbish quality. So technically it doesn't matter what rad cap you use, either? Only need a cap to stop coolant from slopping out as you go round corners! Reckon it would mean you could leave your hoses even longer Colin - any cracks you can wrap in sellotape😁 Link to comment Share on other sites More sharing options...
Colin Lindsay Posted March 26 Report Share Posted March 26 52 minutes ago, johny said: Reckon it would mean you could leave your hoses even longer Colin - any cracks you can wrap in sellotape😁 Aw come on, I do have SOME standards. 1 Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 26 Report Share Posted March 26 so you have moved up to gaffer tape >????? Link to comment Share on other sites More sharing options...
Colin Lindsay Posted March 26 Report Share Posted March 26 1 minute ago, Pete Lewis said: so you have moved up to gaffer tape >????? Gorilla tape, Pete. Saving the last of the roll for real emergencies. Link to comment Share on other sites More sharing options...
Stratton Jimmer Posted March 27 Report Share Posted March 27 23 hours ago, johny said: As an aside, do you still have the overflow pipe and bottle on your cars? I do have them. They seem to be effectively redundant though. 1 Link to comment Share on other sites More sharing options...
micklewis Posted March 31 Report Share Posted March 31 waterless coolant waste of effort ,doesn't help with cooling issues if the basics aren't in place . if the basics are in place normal coolant is all you need, doesn't matter if in a $3 million dollar Ferrari 250 gto or your $ 50 scrap yard special , if anything flus system and use longlife (red)coolant and distilled water . Link to comment Share on other sites More sharing options...
Colin Lindsay Posted March 31 Report Share Posted March 31 4 hours ago, micklewis said: if anything flus system and use longlife (red)coolant and distilled water . Why not blue? Just asking! Link to comment Share on other sites More sharing options...
johny Posted March 31 Report Share Posted March 31 I wonder if our water pumps are less likely to start leaking with waterless as theres no pressure? Ive had a few seals go and of course the only remedy is to replace the complete pump (or alternatively go for the mechanical seal upgrade which I havent tried yet).... Link to comment Share on other sites More sharing options...
Colin Lindsay Posted April 1 Report Share Posted April 1 I've come to realise that modern pumps are really only service items - replace every two years or so! In an attempt to make things last I had three of the early pumps refurbished, new bearings and seals professionally fitted, but the first one I used (about a year after they had been returned as fully reconditioned) leaked almost immediately, and so I didn't even try the other two. Link to comment Share on other sites More sharing options...
johny Posted April 1 Report Share Posted April 1 Without pressure youd think theyd be better but might not be the case I suppose as quite often they seem to leak when stationary... Link to comment Share on other sites More sharing options...
micklewis Posted April 5 Report Share Posted April 5 On 31/03/2024 at 17:51, Colin Lindsay said: Why not blue? Just asking! better corosion properties when dealing with cast iron ,ally, copper and brass components Link to comment Share on other sites More sharing options...
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