Shimano/Citroen mineral oil mixability?
They have different thickness and will seperate in you hoses. You shouldnt really mix any oil really for the same reason.
You should flush the the brake out using the lhm so no shimano oil is left, just bleed the brake loads.
Daft question but it is mineral oil you need?Posted 8 years agojim the saintSubscriber
Any mineral oil will work but different brands do have different consistencies so will not mix.Posted 8 years ago
In general terms all the ‘bikey’ mineral oils have a thinner consistency than the automobile ones. I’ve used Halfords ‘car’ mineral oil in my Shimano brakes and I did notice that the brakes felt a bit more sluggish at the lever, the oil was also noticeably thicker when filling the brakes up.
Stendec sell a mineral oil that although not cheap does seem to work incredibly well in Shimano brakes.patcouserMember
St John Street cycles even sells car LHM fluid for use with Shimano / Magura brakes. About to give it a try:
1 litre unipart LHM+ fluid for 9 quid
shimano stuff 15 quid (rec retail 20quid)
so I guess not that much in it.Posted 7 years agotonyg2003Subscriber
As a long time owner of various hydropneumatic citroens I’ve used LHM with all my Shimano brakes no problems. LHM is used in a much higher pressure system and has a high boiling point, so unless you are going to the Alps I’d add it. I wouldn’t mix them. For the cost of some LHM I’d just drain the shimano stuff.
Get your LHM mail order from Vantage Citroen, Merton S.London. Cheapest in the UK.Posted 7 years agomboySubscriber
Citroen LHM is MUCH thicker than Shimano Mineral oil… It will separate out if you mix the two, and in use it causes a lot more drag in the brake lever feel, and generally you can just tell it’s like thick goop (imagine putting treacle in your suspension forks instead of 7.5W oil for a comparison!).
But if you’re REALLY dead set on buying LHM, don’t pay any more than £6 per litre for it… Don’t say I didn’t warn you though, the Shimano stuff really is a lot thinner and makes the brakes feel and work a lot better!Posted 7 years agoricardo666Subscriber
I have used this and the halfrauds equivilent in my xt brakes, with no noticable difference, begrudge paying for the shimano mini pot.
Was told about the citroen LHM stuff from the guy in the LBS, so have a litre of that in the workshop for the next bleed, which cost me about 6 quid.Posted 7 years ago
The topic ‘Shimano/Citroen mineral oil mixability?’ is closed to new replies.