- Fri Jun 16, 2023 9:49 pm
#220779
1) Flushing brake fluid every two years is *NOT* overkill for a car you want to keep.
If you intend to keep a car for 10+ years, either change the fluid every two years (or at least three) or buy spares for calipers, hydraulic cylinders, ABS pumps, etc, If you want to not change fluid and keep it for 20+ years, buy spares for all the metal hydraulic lines and junctions.
Doubt me if you want. I have 20+ years now fixing/restoring 928s; that guidance is from that experience.
2) Stability of brake fluid is not guaranteed after the hermetically sealed can is opened to air. Use it within a few weeks or toss it.
3) Yes, any “good” fluid will do as long as the specs are appropriate. Personally, I use Pentosin Super DOT 4 in “Classic Porsches”(*) and Pentosin Super DOT 4LV in the 2015+ Porsches.
(*) I don’t know the year of the “cut line” between the LV and non-LV as I don’t work on ‘96-‘14.
Hanlon’s Razor: Never attribute to malice that which is adequately explained by stupidity.
Heinlein’s Corollary: Never underestimate the power of human stupidity.
The Reddit Conjecture: Sufficiently advanced stupidity is indistinguishable from malice.
Worf’s Razor: Never attribute to stupidity that which is adequately explained by laziness.
Worf’s Identity: Sufficiently advanced laziness is indistinguishable from stupidity
Worf's Law: Once you've mitigated risk from stupidity and laziness in your endeavors, failure is usually the result of insufficient imagination.
My 928 Inspection Guide