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Oil-filled radiators, I've seen the name glycol floating around. Is that what they're all filled with
If they're oil filled, it's not glycol since that's not an oil. There's stuff called diathermic oil, but it's hard to find in small quantities. Domestic units are not generally designed to be refillable, because if you lose oil you have a leak and you won't be able to repair that safely. Also, as a safety precaution, letting normals refill them will result in explosions because people will over fill them and the pressure from thermal expansion will pop the seams.
gbj_tester
@mmccarthy
Oil-filled radiators, I've seen the name glycol floating around. Is that what they're all filled with (when they're not filled with water)? If so, where do I buy it? Got some radiators that seemed to have suffered some leakage in transit and want to fill them up.