I sell both, in the automotive space. Super DOT4 is a good product, as are the Motul, RBF600 or RBF660 products, another choice is Motul's DOT 5.1 as it has a good high boiling point but is a lot more cost effective than the RBF series. Just a note, DOT5.1 is completely compatible with DOT 3/4 compatible unlike DOT5, which is silicone based not glycol based.

 

I’m considering going with it as I can get it close to my house. I see brand called ATE 200 is popular as well. I appreciate the input. I see Castrol has a 70$ a bottle fluid. 😦

 

Unless you’ve opened The system and need to start from scratch a little 500ml bottle should be plenty. Just look at the dry and wet boiling points, see if there’s a date code on the bottle and try and stick to something manufactured in the last couple of years. Buy it from a shop locally and support an independent business!

 

I've been using RBF 600. It's really good, and it's not too expensive either: https://amzn.to/2O571QS

 

On the street sans your brakes dragging........ you will never even get close to the bioling point of even the cheapest stuff sold at national chains for dot 4......

far better off buying cheaper stuff and flushing multiple times per year and keeping all moisture out and fluid fresh!!!!!!

Hell even many of the racers and trackday guys that go over to the local 1.1 mile 24 turn track and run 20 minutes at a time can't overheat any brake fluid installed! and many of those are my customers who simply use the "cheap stuff"

Maxima dot 4 ........... wet boiling point of 311* ($6/ 16.9 ounces)
EBC dot 4 ............... wet boiling point of 295* ($4.80/ 16 ounces)
house brand from local auto parts store...... wet boiling point of 295* (6.95/ 32 ounces) clearly the best deal if doing tons of brake flushes in a day! I run this in my 6 piston brembo equipped Mustang even at trackday events without issue, and have ran it in many a customer bike over the years, I just don't like the quart size, too big and lasts too long once opened.... I mostly buy 12 oz containers of dot 4 (Bel ray super dot 4.... boiling point 311*) and use it on one bike and throw away the remains and open a new fresh bottle for the next bike ... I just got tired of it not being crystal clear any longer after a day or two (quarts bottles mostly) and it is far more "better" for me and the customers to have it be an open/use it all/throw it away and the next guy also gets a brand new fresh bottle too.......rather than buying a bulk quart (or larger) and having enough for 4 or 5 bike flushes but it sits open for 2 or 3 days or some parts of the season it may be a week or more

a few have me install the Bel Ray "racing" brake fluid............. wet boiling point of 411* ($10/ 12 ounces)

and yes I have few who refuse to believe using anything sans motul (at $22-$30 for 16 ounces and still only 399* boiling point RBF600 / 401* for RBF660) can possibly work or be good enough

but none of these guys/girls can tell the difference when they use a different fluid

But you want the freshest you can buy too, even in the plastic bottles it will absorb moisture and get discolored.....

never hurts to buy the moisture meter to test the brake fluid, as little as 2% moisture reduces boiling point about 25% and can lead to problems in caliper and master

Flush more, and buy the cheap stuff that moves off the shelf fast!!!!!!!! that is how you will have the freshest, buying $30+ dot 4 that few buy typically means it sits on the shelf for long periods of time!!

 

Thank you for the great explanation. I appreciate the input. Do you have a speed shop? Just curious as you said for your customers bikes.

Cheers 🍻

 

Lloyd's Motorcycle Performance Center

Motorcycle service and repair. Performance is more than 0-60 numbers, or top speed mph.

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