Retired USAF (IYAAYAS)
Today I went briefly looking around for some good ol' DOT 4 brake fluid and all that I saw at three different auto parts stores was synthetic. There was plenty of the other DOT levels, which I don't want, that were petroleum based but all of the DOT 4 was synthetic. Any thoughts on using synthetic?? Also, I saw some labeled as DOT4LV. It was right next to the DOT4 Super. I don't want the Super and I don't know what the LV is. The can was in four or five different languages but didn't explain any. Any input on the LV, guys?