Ken

I have a feeling that won't be the last time that this topic is aired. I also run a +8 which used to be marginal on cooling.

The most effective way of cooling the engine is to use a good quality alloy radiator , particularly one that is deeper than standard. This will certainly work.

Secondly try installing an oil cooler kit, this will cool the oil, and therefore let the radiator be more efficient in cooling the water. This will help.

Make sure that the oil level is full to the top mark, this is an extension of the above.

Also make sure that all the hoses are in good condition and not leaking.

Lastly don't believe the figures on the gauge, it is a difference that you are looking for, not an absolute number.

The fluid in the cooling system will have much less effect on cooling the engine than any of the above measures.

The only real benefit in using the usual "waterless coolants" is that they are less toxic than usual diluted monoethylene glycol (MEG) based fluids, since they are normally based on Monopropylene Glycol (MPG)

MEG has better heat transfer properties than MPG, MPG is more viscous than MEG so the water pump will have to work harder.

So if you really believe the benefits claimed by the publicity for these coolants , then please go ahead and use them , but don't be surprised if they don't solve overheating issues.

As you can read above, others have a different opinion. Mine reasoning is based on science , not practical experience, as I am not going to waste my money on them.


Last edited by MOG 615; 19/01/16 09:20 PM. Reason: dam autocorrect !

Andy G
1999 +8 , Indigo Blue.
Ex-John McKecknie/Mike Duncan 1955 +4 racer.