Last week, a customer called us from the side of Donnybrook Road. Her car had overheated in 38-degree heat, steam pouring from under the bonnet. “I just had it serviced six months ago,” she said. The problem? Nobody checked her coolant level before summer hit.
This happens more often than you’d think in Mickleham. Summer in Melbourne’s northern suburbs is tough on cars—scorching temperatures, dust from all the new construction, and heavy traffic that keeps your engine working overtime. Your car needs different care in summer than in winter, and most people don’t realise it until they’re stranded.
This guide covers exactly what Mickleham drivers need to check before the next heatwave hits. Some of these you can do yourself in 20 minutes. Others need professional eyes. Either way, they’ll save you from expensive breakdowns and roadside rescue fees.
You don’t appreciate good AC until it stops working on a 40-degree day with the kids in the back seat. We see this every summer—people who ignored weak airflow in spring are now paying $600+ for compressor repairs.
The construction dust in Mickleham clogs cabin filters faster than normal. When was the last time yours was changed? If you can’t remember, it’s probably overdue.
Quick fix: Book an AC service now, not when it fails in February. We check refrigerant levels, test for leaks, and replace cabin filters. Takes about an hour, costs way less than emergency repairs.
Engine overheating is the number one reason we get emergency calls during Melbourne summers. And most of them could have been prevented with a simple coolant check.
Picture this: you’re stuck in traffic on the Hume, engine idling for 20 minutes in 39-degree heat. Your cooling system is working flat out. If your coolant level is low or your radiator hoses are cracked, you’re minutes away from disaster.
The expensive part: If you ignore these signs and blow a head gasket, you’re looking at $2,000+ in repairs. A coolant system check costs about $80. Do the math.
Everyone thinks batteries die in winter. Wrong. Summer heat kills more batteries than cold ever will.
Extreme heat speeds up the chemical reaction inside your battery, which sounds good until you realise it also speeds up internal breakdown. A battery that’s been fine all year can suddenly fail on a 42-degree day.
If you bought your car secondhand, you might not know. Check the sticker on top—most batteries show a manufacture date. If it’s more than 3 years old, get it tested before summer peaks.
We test batteries for free with every service. Takes two minutes. Better than being stranded at Craigieburn Plaza with your shopping melting in the boot.
Most people set their tyre pressure once and forget about it. But pressure increases as the road heats up. Under-inflated tyres on hot asphalt? That’s how you get blowouts on the motorway.
Plus, with all the gravel and construction debris around Mickleham’s new estates, your tyres are taking more punishment than usual.
If you can’t remember when you last rotated your tyres, it’s probably time. Uneven wear gets worse in summer heat.
Hot engines need clean oil. When oil gets old and dirty, it can’t protect moving parts properly. More friction means more heat, which makes the oil degrade even faster. It’s a vicious cycle.
While you’re at it, check brake fluid, power steering fluid (if your car has it), and windscreen washer fluid. The dust in Mickleham means you’ll use more washer fluid than usual.
Mickleham has more construction dust than most suburbs. All that dust has to be filtered out before it reaches your engine or your lungs.
There are two air filters in your car:
A clogged engine filter reduces power and fuel economy. A clogged cabin filter means weak AC airflow and musty smells. Both are cheap to replace, expensive to ignore.
Rubber deteriorates in heat. A cracked belt or split hose won’t give you much warning before it fails. Then you’re stuck on the side of the road waiting for a tow truck.
When we service your car, we check all belts and hoses as standard. If you’re doing your own checks, just look for cracks, fraying, soft spots, or anything that looks worn.
Look, we get it—car maintenance isn’t exciting. But neither is being stranded in 40-degree heat or paying $3,000 for a new engine because you ignored a $200 problem.
Our summer vehicle inspection covers everything on this list, plus a full safety check. We’ll tell you what needs fixing now, what can wait, and what you can ignore. No pressure, no surprises, no dodgy upselling.
Most people in Mickleham know us as the Repco Authorised workshop on Distribution Drive. We’ve been looking after local cars for years, and we’ll look after yours too.
Call us: (03) 7056 9200
Visit Us: 38 Distribution Dr, Mickleham VIC 3064
Open Monday-Saturday, 8:30 am-5:00 pm
RR Automotive
38 Distribution Dr, Mickleham VIC 3064
Copyright © 2026 RR Automotive Mickleham
