What are any of you successfully using as a brake system flush? This would be for a change over to DOT 5 brake fluid. I was thinking of using isopropyl alcohol. John--Las Vegas.
Brake system flush
- Thread starter Torino
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Use the brake fluid for the flush.
Originally Posted By: Torino
What are any of you successfully using as a brake system flush? This would be for a change over to DOT 5 brake fluid. I was thinking of using isopropyl alcohol. John--Las Vegas.
DO NOT use iso alcohol. It contains water and Brake fluid is hydroscopic. There are no cleaners for a brake flush, just flush with brake fluid.
What are any of you successfully using as a brake system flush? This would be for a change over to DOT 5 brake fluid. I was thinking of using isopropyl alcohol. John--Las Vegas.
DO NOT use iso alcohol. It contains water and Brake fluid is hydroscopic. There are no cleaners for a brake flush, just flush with brake fluid.
Originally Posted By: DieselTech
Originally Posted By: Torino
What are any of you successfully using as a brake system flush? This would be for a change over to DOT 5 brake fluid. I was thinking of using isopropyl alcohol. John--Las Vegas.
DO NOT use iso alcohol. It contains water and Brake fluid is hydroscopic. There are no cleaners for a brake flush, just flush with brake fluid.
GP5???
Originally Posted By: Torino
What are any of you successfully using as a brake system flush? This would be for a change over to DOT 5 brake fluid. I was thinking of using isopropyl alcohol. John--Las Vegas.
DO NOT use iso alcohol. It contains water and Brake fluid is hydroscopic. There are no cleaners for a brake flush, just flush with brake fluid.
GP5???
Torino,
What vehicle?
Why DOT5 (silicone) brake fluid? Even Harley got away from that stuff.
What vehicle?
Why DOT5 (silicone) brake fluid? Even Harley got away from that stuff.
Suck out the reservoir clean, and fill it with clean DOT 3/4/5.1 fluid. Then follow OEM bleeding sequence or in diagonals. If you have access to one, a power bleeder makes like so much easier...
Quote:
This would be for a change over to DOT 5 brake fluid.
Why? DOT5 silicone brake fluid is more compressible than DOT3/4/4+/5.1 polyglycol ether brake fluid and doesn't work as well with ABS. DOT5 doesn't absorb moisture, so any moisture in the system puddles in low points in the system.
I found this on one web site: "If silicone is introduced into an older brake system, the silicone will latch unto the sludge generated by gradual component deterioration and create a gelatin like goop which will attract more crud and eventually plug up metering orifices or cause pistons to stick."
Evidently there is no effective solvent or flushing agent to fully remove brake fluid from the system. There are no bottom drains on the system, just high point air bleeders.
Stick with polyglycol ether brake fluid or completely dismantle and hand clean your system.
This would be for a change over to DOT 5 brake fluid.
Why? DOT5 silicone brake fluid is more compressible than DOT3/4/4+/5.1 polyglycol ether brake fluid and doesn't work as well with ABS. DOT5 doesn't absorb moisture, so any moisture in the system puddles in low points in the system.
I found this on one web site: "If silicone is introduced into an older brake system, the silicone will latch unto the sludge generated by gradual component deterioration and create a gelatin like goop which will attract more crud and eventually plug up metering orifices or cause pistons to stick."
Evidently there is no effective solvent or flushing agent to fully remove brake fluid from the system. There are no bottom drains on the system, just high point air bleeders.
Stick with polyglycol ether brake fluid or completely dismantle and hand clean your system.
Keep the DOT5 for classic cars, it has no place near a modern system or a daily driver.
I also wonder about the benefits of changing to the 5 brake fluid.
Normally, I would discourage it.
If you have specific reasons besides that is is more expensive, than go for it.
In any event, flush it with fluid, not solvents.
Solvents are good for cleaning removed parts.
Normally, I would discourage it.
If you have specific reasons besides that is is more expensive, than go for it.
In any event, flush it with fluid, not solvents.
Solvents are good for cleaning removed parts.
Its a 68 Torino. Very good suggestions gents, much appreciated and I will proceed. John--Las Vegas.
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