Is it ok to go back to regular after using synthetic? My blinkers are high mileage and have never been changed. I’m worried that if I use synthetic, if I ever go back to regular motorcraft blinker fluid, it may damage something.
Also, while we are on the subject, I am looking for a local part store that may sell this. My other car sprung a leak, and I need to replace the smoke that came out.
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