DOT 4 or DOT 5.1? Whats the difference and which do I need?
We get a lot of questions regarding which oil type to use, so let me explain the differences between the two to help you decide.
Both DOT (this stands for Department of Transport, who set the standards) 4 and 5.1 are glycol-based fluids, meaning that are compatible with one another.
Somer brakes will come with DOT 4 as standard, and often the brakes and manual will usually recommend to only use DOT 4 (mainly on slightly older model brakes). However, DOT 5.1 is fully compatible.....