Shimano Brake Mineral Oil...

nwallace

Just what is it?

My rear managed to leak a fair bit but only discovered this too late to replace it before a big ride.

Staring at the contents of the reserviour and a pool of 3-in-1 (Finish line Dry) oil that was on the floor after doing my chain resulted in a small experiment since "It's only the back"

After a big ride and 2 short ones the 3-in-1 seems to be doing fine, hasn't boiled off and hasn't resulted in the caliper seizing up.

Anyone done similar?

Danlube

In confused, what exactly are you asking/want to know?

cooldad

Why bother?

paul20v

3 in 1 oil is a mineral based oil
but in saying that i would get it out and replaced asap as you dont know what other additives are in it compared to proper brake mineral oil .

nwallace

paul20v wrote:

3 in 1 oil is a mineral based oil
but in saying that i would get it out and replaced asap as you dont know what other additives are in it compared to proper brake mineral oil .

Yeah, that's what concerns me, what does the shimano stuff have that 3-in-1 doesn't, vice versa. It's only an M535 though so not massivley worried about damaging it.

Annoyingly, there's plenty of DOT 4 sitting in the garage.

The Shimano stuff is expensive though and if there's something sitting in the garage that is a suitable alternative...

supersonic

3 in 1 contains allsorts of extras, which will probably rot seals. DOT fluid cannot be used.

Any brake mineral oil will work, as will citroen LMH oil.

nwallace

supersonic wrote:

3 in 1 contains allsorts of extras, which will probably rot seals. DOT fluid cannot be used.

Any brake mineral oil will work, as will citroen LMH oil.

Aye, the LHM was one I just saw, I wonder if Dad still has a bottle from the old BX he had...

paul20v

supersonic wrote:

3 in 1 contains allsorts of extras, which will probably rot seals. DOT fluid cannot be used.

Any brake mineral oil will work, as will citroen LMH oil.

Mineral oil as with other oils come in different viscosity rates so they are not all compatible
LHM is quite a low viscosity and will work
but for the sake of getting shimano fluid why bother messing about

nwallace

Price!

Shimano, 17 quid for a Litre, and never gonig to need that much.
Magura, 27 quid a litre, see above (but smaller bottles available)
Weldtite, 4 quid for 125ml or 32 quid a litre

Castrol LHM is 8 quid a litre...
And I might have had a bottle to hand, but can't find iot if it ever existed.

I need to replace a spokje anyway though so I have to order stuff from a bike shop anyway.

supersonic

LHM works great in Shimano, and Magura, (and Tektro!). Oldie, but a goodie. Viscosity changes a lot when it heats anyway, the ranges are fine for these brakes.

cooldad

Considering how little you need a bottle of Weldtite from CRC is not exactly big bucks.

nwallace

I'm a Fifer.