Does it matter which DOT4 brake fluid I use in my 126?
 

I'm going to be changing my '89 420SEL's brake fluid in the next few weeks and am curious as to whether it makes much difference which DOT4-rated fluid I use. I picked-up a quart of Valvoline's SynPower fluid at the local AutoZone last weekend, but thought I'd check with you guys before I used it...

(I understand that dry and wet boiling points vary from brand to brand, but am I correct in assuming that as long as the product meets the DOT4 standard, it'll do the trick--assuming typical local and highway driving?)

Thanks, as always, for sharing any insights.

I have used the Valvoline product in my brake systems for a couple of years now and have had no problems with it. I have had problems with their power steering fluid in my truck.

Hi Goldstone,

I have used it recently based on a rec. here on the board. Somebody gave the boilling points and prices and this was the best compromise. You might find it with a search. I might have read it on the performance board. Sorry that I can't give better credit to the lister who deserves it.

I picked up 2 quarts but you probably get by with 1.

Good luck

Reinhard Kreutzer

Yeah, i've used that before and i think it is good stuff. If my memory serves me correct, I believe it exceeds the DOT 4 standards for wet and dry boiling points.

ANYBODYS DOT-4 IS JUST FINE. CASTROL & PRESTONE ARE READILY AVAILABLE.

DO NOT BUY INTO THE BS THAT IT HAS TO BE MADE IN GERMANY.