Brake Fluid - is there a consensus on this? (2 Viewers)

[Skruf]

Read through a heap of thread and seems like opinion is split.

Somme say Dot 4 and 5 will destroy your system. Some say its no problem.

It is necessary to get genuine Dot 3?

 

[beatle_bayly]

DOT5 is silicone based. Dot 5.1, DOT4 and DOT3 are glycol ether products.

DOT3 to DOT5.1 are mixable and have higher thermal tolerance the higher the number.

DOT5 doesn't mix with water and to use it you really should completely overhaul the brake system. At the very least the system should be flushed completely with alcohol and purged dry.

I've never had an issue sourcing DOT3, but no reason you can't do a full bleed and replace with DOT4.

 

[excessive]

I use Valvoline Synthetic Dot3/4 available at Advance auto and many others. Been using this for years with good results.