Soluble oil as coolant

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Amended 27/10/18

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Re: Soluble oil as coolant

Post by Lofty » Tue Sep 04, 2018 10:10 pm

Hi bedwards. I’ve come to a similar conclusion. But I’m still trying to uderstand what makes a coolant suitable for motors like ours. I read that ‘type A’ coolants are suited, but cant find any detail on why. I’ve learned that diesels are more prone to cavitation, which promotes ‘corrosion’ (erosion?), especially on wet liners. I must admit I had stalled in this quest while I sort out other issues, but if I learn anything useful I will report. Thanks for your interest.

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Re: Soluble oil as coolant

Post by rid54 » Tue Sep 04, 2018 10:35 pm

Corrosion, very generally, is promoted by "deformation" of the metal parts involved. That is why on some old cars you can see heavy corrosion around suspension spring anchor points, and corners in the framwork; the metal is subject to severe forces and will flex a lot during use of the vehicle. Diesel engines have a lot more pressure forces at work than petrol/paraffin engines, and the block and liners (if present) might suffer from this. Since the environment inside the engine (the coolant pathways) is full with a potentially corrosive liquid (water...), the situation is not optimal.

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