If I have regular mineral-based DOT 3 fluid in my reservoir, can I top it off with Valvoline Synth-Power (DOT 3 and 4) or something similar? Or am I stuck with the old DOT 3 until I have time to flush the whole system?
Function before fashion.
'96 Contour SE
"Toss the Contour into a corner, and it's as easy to catch as a softball thrown by a preschooler." -Edmunds, 1998