Driving an older rig? These high-mileage car maintenance tips will help you extend its life and save money. Find expert recommendations in this post from Sinwal Enterprises Inc in Mississauga, ON!

Got a car with over 100,000 miles on the clock? Don’t worry—there’s still plenty of road ahead! But as your car ages, it needs a little extra attention to keep performing its best. Skip the maintenance, and you could face sluggish performance, poor fuel economy, and costly repairs.

The good news? A few smart habits can go a long way. In this guide, we’re sharing practical high-mileage car maintenance tips to help your vehicle stay reliable for the long haul. Let’s get started!

Want to enhance your car’s performance? Get premium AMSOIL products from Sinwal Enterprises Inc in Mississauga, ON—just call 416-520-5527! You can also stock up online at AMSOIL’s store for all your car care essentials.

1. Oil Changes: The Lifeblood of Your Engine

Oil is your engine’s first line of defense against wear and tear—especially in high-mileage cars. Over time, oil breaks down, losing its ability to lubricate and protect. To keep your engine running smoothly:

• Follow a strict schedule: Synthetic oil should be changed every 25,000 miles or once a year, whichever comes first.
• Use high-mileage oil: Formulated to condition seals and reduce leaks in older engines.
• Check levels regularly: Top off as needed and watch for leaks between changes.

Why it matters: Regular oil changes prevent sludge buildup, reduce friction, and help your engine last longer. Neglecting them can lead to costly repairs.

2. Fluid Maintenance: Keep Everything Running Smoothly

Your car relies on multiple fluids to operate efficiently. Neglecting them leads to costly repairs. Stay ahead of the game with these quick checks:

Transmission Fluid

• Purpose: Ensures smooth gear shifts and prevents overheating.
• Change interval: Every 30,000–60,000 miles (check your manual).

Coolant (Antifreeze)

• Purpose: Regulates engine temperature and prevents corrosion.
• Flush & replace: If you use AMSOIL coolant, you should replace it every 150,000 miles or 5 years.

Brake Fluid

• Purpose: Maintains braking performance.
• Change interval: Replace every 2 years or 30,000 miles.

Power Steering Fluid

• Purpose: Keeps steering responsive.
• Top off as needed: Check for leaks and top off as needed.

Pro tip: Dark or dirty fluid means it’s time for a change.

3. Filter Replacements: Clean Systems Perform Better

Clogged filters reduce efficiency and strain your engine.

Engine Air Filter

• Replacement interval: Every 12,000–15,000 miles.
• Why it matters: A dirty filter hurts fuel economy and power.

Cabin Air Filter

• Replacement interval: Every 15,000–25,000 miles.
• Why it matters: Improves air quality inside the car.

Fuel Filter

• Replacement interval: Every 30,000–40,000 miles.
• Why it matters: Prevents debris from reaching the engine.

Ready for smoother rides and better engine protection? Pick up AMSOIL 10W-30 100% Synthetic High-Mileage Motor Oil today! Shop AMSOIL online or call Sinwal Enterprises Inc in Mississauga, ON, at 416-520-5527 to stock up and get expert tips!

4. Tire Care: Safety & Efficiency Start Here

Keeping your tires in top shape means better grip, fewer fill-ups, and a safer drive. Here’s the lowdown:

• Check tire pressure monthly (underinflation causes uneven wear).
• Rotate tires every 5,000–7,500 miles for even tread wear.
• Inspect tread depth—replace if below 2/32".
• Get an alignment every 10,000 miles (or if the car pulls to one side).

Bonus: Properly inflated tires can improve gas mileage by up to 3%.

5. Battery Maintenance: Avoid Surprise Failures

A dead battery can leave you stranded at the worst possible time. Keep yours healthy with these simple tricks:

• Clean corrosion from terminals (use a mix of baking soda and water).
• Check voltage regularly (12.4–12.7V when the engine is off is ideal).
• Replace every 3–5 years—weak batteries struggle in extreme weather.

6. Protect Your Paint & Prevent Rust

Your car’s paint isn’t just about looks—it’s armor against rust and wear. Keep it looking sharp (and your ride protected) with these easy steps:

• Wax every 3–6 months to protect the paint from UV damage.
• Touch up scratches and chips to prevent corrosion.
• Wash regularly, especially in winter (road salt accelerates rust).

7. Fuel System & Engine Treatments

Over time, carbon deposits can clog injectors and make your engine feel lazy. Here’s the fix:

• Use a fuel injector cleaner every 3,000–5,000 miles.
• Consider a professional decarbonization service if the engine feels sluggish.

8. Belts & Hoses: Don’t Wait for a Breakdown

A snapped belt can leave you stranded—or worse, damage your engine. Stay ahead of problems with these key checks:

• Timing belt: Replace every 60,000–100,000 miles (critical for interference engines).
• Serpentine belt: Check for cracks and replace if worn.
• Hoses: Look for leaks, bulges, or brittleness.

Don't let age slow down your car. Use our high-mileage car maintenance tips and AMSOIL's powerful synthetic oil to keep it running smoothly! Call Sinwal Enterprises Inc in Mississauga, ON, at 416-520-5527 or shop for AMSOIL online now.