Parts for your 1987 Mitsubishi Pajero-Brake fluid

1987 Mitsubishi Pajero brake fluid: what it is and how to look after it

Brake fluid is absolutely relevant to a 1987 Mitsubishi Pajero. Factory technical references — including the Mitsubishi Pajero L040/L140 Series Workshop Manual (Brake section), the 1987 Owner’s Handbook, and the Haynes Mitsubishi Pajero/Montero 1983–1996 Repair Manual — specify a hydraulic brake system using glycol-based brake fluid (DOT 3, with DOT 4 acceptable). Many manual-transmission Pajeros of this era also use the same fluid in the clutch hydraulics.

On a first‑gen Pajero, brake fluid’s main job is to transfer pedal force to the calipers and wheel cylinders instantly and reliably. Because it’s hygroscopic, it slowly absorbs moisture from the air, which lowers its boiling point and can corrode internal components over time. Fresh, correct‑spec fluid keeps pedal feel firm on long downhill runs, helps prevent fade when towing or off‑roading, and protects seals, the master cylinder and proportioning valve.

As part of routine servicing, it’s smart to replace the brake fluid every two years (or around 40,000 km), and sooner if the vehicle tows, sees beach work, or lives in humid or alpine conditions. Dark, cloudy fluid or a spongy pedal are cues it’s due. During any service, check the reservoir level and condition, and inspect for dampness at flex hoses, calipers, rear wheel cylinders and the master cylinder.

• Use DOT 3 or DOT 4 fluid as specified, avoid mixing with DOT 5 (silicone). DOT 5.1 is compatible with DOT 3/4 but isn’t usually necessary.
• Keep the cap area spotless before opening. Only use fresh fluid from a sealed container.
• Plan on around 1 litre for a thorough flush. Bleeding sequence is typically the wheel farthest from the master cylinder first, follow the workshop manual, especially if ABS is fitted.
• Brake fluid damages paint — wipe spills immediately with water.

If the Pajero has a manual gearbox, don’t forget the clutch master cylinder, it benefits from the same two‑year refresh. After any brake work, confirm a firm pedal with the engine running and perform a cautious road test in a safe area. Sticking with the correct spec and interval keeps the old bus stopping straight and true, whether it’s carting the family, towing a van, or exploring corrugations.

Popular questions

What brake fluid does a 1987 Mitsubishi Pajero take?
Mitsubishi’s workshop and owner references for the first‑gen Pajero call for DOT 3 brake fluid, DOT 4 is acceptable and commonly used today. Don’t use DOT 5 (silicone). If it’s a manual, the clutch hydraulics typically use the same fluid. When flushing, buying 1 litre usually covers the job.

How often should the brake fluid be changed?
Every two years is the go, regardless of kilometres. If the vehicle tows, does beach work, or tackles long alpine descents, consider shorter intervals. Moisture ingress lowers boiling point and can corrode internal parts, so staying on top of it keeps the pedal feel consistent and components healthy.

Can a home mechanic bleed the brakes, and what order should be used?
Yes, if they’re competent and follow the manual. Start at the wheel farthest from the master cylinder and work closer — typically right rear, left rear, right front, left front on many Pajeros. Keep the reservoir topped up, use clear tubing to watch for air, and follow any ABS‑specific procedures if your vehicle has it.