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Parts for your 1989 Mitsubishi Pajero-Brake fluid
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1989 Mitsubishi Pajero Brake Fluid
Brake fluid is absolutely relevant to the 1989 Mitsubishi Pajero. The model uses a conventional hydraulic braking system that relies on glycol-based brake fluid, as outlined in Mitsubishi’s factory service literature for late‑1980s Pajero/Montero models, plus widely used references like the Gregory’s Service & Repair Manual (Pajero 1983–1991) and the Haynes Repair Manual (Montero/Pajero 1983–1993). These sources specify DOT 3 brake fluid (with DOT 4 commonly acceptable) for the system.
On this Pajero, brake fluid transfers pedal force to the calipers and wheel cylinders, lubricates internal seals, and helps defend against corrosion. It’s formulated to cope with heat from repeated stops and steep descents, which is why the correct fluid type and condition matter so much on a 4x4 that might tow, tour, or tackle rough tracks.
Because brake fluid is hygroscopic, it absorbs moisture over time. Water lowers the boiling point and can corrode lines, hoses, and cylinders, leading to a long pedal, fade on hills, or even component failure. Most service schedules and local trade guidance recommend replacing the brake fluid every 24 months or around 40,000 km. If the fluid looks dark or smells burnt, or if the pedal feel has gone a bit spongy, it’s time to organise a flush and bleed.
Use DOT 3 (original spec) or DOT 4 if preferred, avoid silicone DOT 5. DOT 5.1 is glycol‑based and can be compatible, but only if chosen with care—always check the reservoir cap and workshop manual. Owners should also note some manual‑trans Pajeros run a separate hydraulic clutch circuit that uses the same type of fluid, that system needs periodic attention too.
- Check the reservoir under the bonnet monthly, keeping the level between MIN and MAX.
- Top up only with fresh, sealed brake fluid from the correct DOT rating.
- Wipe the cap and area before opening to keep grit out, brake systems hate contamination.
- During a flush, follow the workshop bleed order and use clean gear, around 0.7–1.0 litre typically covers a full change.
- Brake fluid can damage paint—cover guards and clean spills straight away.
- At service time, inspect hoses, hard lines, caliper slide pins, and wheel cylinders for leaks or wear.
Looked after properly, the Pajero’s braking system stays consistent and confidence‑inspiring on road and out bush, with firm pedal feel and no dramas when it matters.
Popular questions about 1989 Mitsubishi Pajero brake fluid
What brake fluid type does a 1989 Mitsubishi Pajero use?
From period Mitsubishi service information and common repair manuals, DOT 3 is the original specification, with DOT 4 widely accepted. The reservoir cap usually states the approved grade. Avoid silicone DOT 5. If considering DOT 5.1, confirm compatibility first.
How often should the brake fluid be changed?
Every 2 years or about 40,000 km is a solid guideline for Australian and New Zealand conditions. Heavy towing, steep descents, mud, or water crossings can shorten that interval. If the fluid is dark or the pedal feels soft, get it flushed sooner.
How much brake fluid is needed for a full flush?
Plan on roughly 1 litre to comfortably flush and bleed the entire system, depending on method and whether ABS (if fitted) is cycled. Keep a second sealed bottle on hand just in case, and always dispose of old fluid responsibly.
