My sister asked me this & I thought I would get other opinions. She took her car to get the anti-freeze replaced because it had been 2 years. The mechanic said it tested down to -25 (NE Ohio) so didn't need replaced. I told her that testing doesn't show how the anti-rust and lubricating properties have broken down, but maybe anti-freeze is better than it used to be, and I would probably defer to a "professional" mechanic's visual inspection. Opinions?
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'86 244 160k, 88 245 185k, 90 245 153k, 90 745 waiting for me to fix
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