Workshops and riders with Shimano hydraulic disc brakes who have decided to use Morgan Blue's oil and want it in a large can.
Morgan Blue Hydraulic Mineral Oil comes in a 1 litre metal can labelled 'For Shimano Brakes'. Morgan Blue describes it as a suitable brake fluid for all Shimano hydraulic disc brakes, whether mountain, road, gravel or touring, and says that because it does not bind water it keeps its quality longer than DOT fluid, so it needs replacing less often.
Two cautions come from the brake makers themselves. Shimano says not to use oils other than those it specifies, and it lists newer brakes that are dedicated to its own low viscosity oil. Morgan Blue does not describe this can as low viscosity. Decide whether a third-party oil suits your brake, and check your model number against Shimano's documentation first.
It is mineral oil, not DOT fluid: never put it in a DOT brake such as SRAM Level, Guide, G2 or Code, and never mix the two, because SRAM says a brake contaminated with the wrong fluid has to be replaced. It is also not a general-purpose oil for every brand: SRAM's Maven, Motive and DB brakes and Campagnolo systems each name their own oil.
For Shimano brakes, per Morgan Blue
Morgan Blue says it suits all Shimano hydraulic disc brakes: MTB, road, gravel or touring.
Mineral oil, no DOT
Does not bind water, so it keeps its quality longer than DOT fluid.
1 litre can
Workshop-size metal can with a red screw cap.
Check with Shimano first
Shimano says to use only the oils it specifies, and some newer brakes need its low viscosity oil.
Never in a DOT brake
Mineral oil in a DOT brake damages the seals, and SRAM says the brake must then be replaced.
Fluid
Compatibility
Packaging
Handling and safety
Mineral oil versus DOT
Mineral oil does not bind water the way DOT fluid does, so Morgan Blue says it holds its quality longer and needs replacing less often. SRAM makes the same point, giving its mineral oil brakes longer service intervals than its DOT brakes.
Seals are matched to the fluid
Brake makers choose seal materials to suit one type of fluid. DOT fluid in a mineral oil brake, or mineral oil in a DOT brake, damages the seals, and SRAM says the brake then has to be replaced. Even between mineral oils, Shimano, SRAM and Campagnolo each name the oil they want.
Standard and low viscosity Shimano oil
Shimano now uses two mineral oils. Its low viscosity oil is dedicated to a list of newer brakes on Shimano's compatibility page, and Shimano says not to use oils other than those it specifies. Morgan Blue does not describe this can as low viscosity.
Great for
Maybe not for
1 litre metal can (label: CONT. 1 L). Check the fluid your brake needs before you buy: look for 'mineral oil' or 'DOT' on the lever or caliper, or in the manual.
Check the fluid before you open the can
Look for 'mineral oil' or 'DOT' marked on the lever or caliper, or in the manual. Mineral oil and DOT fluid must never meet: SRAM says a brake contaminated with the wrong fluid has to be replaced, so keep separate syringes, funnels and rags for mineral oil.
Keep it clean and dispose of it properly
Wear gloves and eye protection, keep oil off the pads and rotors, and take used oil to a proper collection point. SRAM says mineral oil needs the same safety equipment and disposal as DOT fluid.
Belgian lubricants, cleaners and care products.
Morgan Blue is a Belgian brand based in Jabbeke that describes itself as a specialist in lubes, oils and cleaners.
Its range covers chain lubricants, cleaners, greases and protection products, plus body-care products for riders.
