Coolant additive, will it help?
 

So before I do a full radiator flush I was wondering if adding something like water wetter to the existing coolant would help or hurt an old flathead. I'm assuming it will hurt it, so I might as well do the flush and figure out something else to keep the engine cool

Re: Coolant additive, will it help?
 

It won't hurt it, but the chances of it curing the heating problem are slim. A properly cleaned radiator in good condition is the best insurance against heating trouble. Nothing against the water wetter type surfactants...they are a decent product.



Terry

Re: Coolant additive, will it help?
 

Great, thanks. I'll just do a flush and clean.

Re: Coolant additive, will it help?
 

Nothing cools better than straight water. However, you do need an anti corrosion agent with a water pump lubricant.

Re: Coolant additive, will it help?
 

Fix the actual issue and then proceed. I use norosin in mine. (We don’t get cold enough for antifreeze)

Re: Coolant additive, will it help?
 

Use distilled water not regular faucet water. Cheap at your local grocery store.