The fluid needs changed and flushed. The master cylinder, hoses, and calipers could need changed.
That depends what kind of oil, but most oils will adversely affect the rubber brake seals. I would replace all the brake fluid in your car as soon as possible.
Only brake fluid can be used for brake fluid. Brake fluid is a glycol-based liquid - it's closer to antifreeze than to oil, but don't use antifreeze in it either. Only brake fluid.
Some alternatives to mineral oil brake fluid that can be used in vehicles include silicone-based brake fluid, glycol-based brake fluid, and synthetic brake fluid.
perhaps you mean brake fluid. The engine oil will be spoilt, as will be the Brake Fluid.Read more: What_is_the_treatment_for_engine_fill_with_break_fluid_and_engine_oil_mix
DOT ( 3 ) brake fluid
Brake fluid does not need to be changed as oil is but constantly needs to be replenished.
The clutch does not use oil, it uses DOT3 brake fluid. The clutch cylinder gets its brake fluid from the brake cylinder and is directly below it. Add fluid to the master brake cyliinder reservoir.
What fluid? Engine oil, transmission oil, power steering oil, coolant fluid, brake fluid.
The equivalent of LHM brake fluid for your vehicle is mineral oil-based hydraulic fluid.
The recommended type of brake fluid to use with Shimano brake systems is mineral oil.
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In vehicles: Differential Usually 90 Weight gear oil Transfer case (if 4wd) Transmission Fluid Power steering fluid Windshield washer fluid Brake Fluid Coolant Fluid (antifreeze) Motor Oil Brake Fluid