Ethylene, propylene, organic, inorganic, silicates, long life, distilled/demineralized, non-distilled, bolt in zinc/magnesium anodes andwhatnot.
All I found is a ton of conflicting answers.
Some say propylene based doesn't kill your bearings, when it gets into the oil, but it kills your seals on older engines (also silicone form-a-gasket stuff).
Some say distilled/demineralized water is corrosive and eats your engine, others say tap water makes deposits and scaling, and that some instructions say to use distilled water.
Everybody says they did this or that for 150 years (pretty much every possible combination) and never had a problem at all,
than the mechanics chime in and tell stories about leaking disasters with a certain type of antifreeze, they had to fix all the time etc.
The information you can find online is also all over the place, it's a mess and most of the time a sales pitch.
so... what antifreeze you guys recommend for a 261 with a water heated aluminum intake and original radiator (brass parts).
Thanks, Frank
Last edited by Stovebold6; 12/22/2022 5:04 PM.