Originally Posted by atikovi
Originally Posted by Gebo
Originally Posted by atikovi
Originally Posted by Gebo
DOT 3 is not as water absorbing as DOT 4.
You have a link explaining that?
Nope. Heard it explained on an AGCO Automotive Corp podcast called "The Automotive Hour" sometime in 2018.
Someone had the question of which should I use. DOT 3 or DOT 4?
If there is such a difference, it must be inconsequential. A Google search didn't turn up anything.
https://www.google.com/search?q=dot...027j1j8&sourceid=chrome&ie=UTF-8
What the AGGO guys said was that for most drivers, DOT3 would be the better choice if that is what your owner's manual requires. I've used the ones that say DOT3/4 which I assume is DOT4???? IDK???
On my next change, I am going straight DOT3 from Toyota.
If I remember correctly, there is something that has to to with the DOT4's "wet boiling point" and a "dry boiling point." BUT, the DOT4 is a higher performing fluid. Like stated earlier, either one is fine as long as you change it every 3 years.