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The difference between -1 and 3 is 4.
DOT 3 or DOT 4 it doesn't actually matter if it has DOT 3 in you can us DOT 4 what ever the case if you can use the next one or two up the only difference is when you get to DOT 4 or 5 is a higher boiling point
The difference between 7 and 3 is 4.
At the earliest convenous you should bleed out the dot 3 and change it out with dot 4. More than likely the dot 3 will be fine but the difference is the dot 4 has a higher boiling point for extreme conditions. So while the dot 3 is in the system no racing or towing and the system will be just fine. If you boil the dot3 fluid in your system the brakes will become very soft or squishy.
-1
Dot 3 or Dot 4Dot 3 or Dot 4
is super dot 4 ,compatable with dot 3 and dot 4 break fluide.
Dot 3 or Dot 4Dot 3 or Dot 4
You can use DOT 4 in place of DOT 3 but don't use DOT 3 in place of DOT 4. DOT 4 has a higher boiling point than DOT 3. DOT 4 is in there for a reason.
It's ok , dot 4 is an improvement formula from dot 3.
dot and vaginex
The difference between 3/8 and 3/4 is that 3/8 is smaller than 3/4. In other words, 3/4 is greater than 3/8.