Can I add water to my radiator in an emergency?

Yes — in an emergency, plain water is better than no coolant at all. It'll get you to a shop. But don't use it long-term: water boils at a lower temperature than coolant mix and provides no corrosion protection. Top up with proper 50/50 coolant as soon as possible.

How long should I wait before opening the hood?

At least 20 minutes, ideally 30. The cooling system is pressurized at operating temperature. If you see steam, wait until it stops completely. Never open the radiator cap while the engine is hot — the sudden pressure release can spray boiling coolant.

My car only overheats in stop-and-go traffic — is that normal?

No, that's not normal — but it's a specific clue. It usually means the radiator fan isn't working, or the fan relay has failed. At highway speed, air flow through the radiator handles cooling. At low speeds, the fan has to do the work. Get the fan and relay checked.

How much does it cost to tow an overheating car?

In Saskatoon and surrounding areas, a typical tow runs $150-$250 depending on distance. That's a fraction of the $3,000-$8,000 cost to replace a cracked engine block from driving an overheating car. Check our towing rates guide for specific pricing in Saskatchewan.

Will my engine be damaged if it overheated once?

If you pulled over quickly and let it cool down, probably not. A single brief overheat usually doesn't cause permanent damage. But repeated overheating — or driving for miles with the gauge pegged in the red — can warp the cylinder head, blow the head gasket, or crack the block. When in doubt, have a mechanic do a cooling system pressure test and check for combustion gases in the coolant.

BACK TO HOME

CAR
OVERHEATING?

If your temperature gauge is in the red or you see steam coming from under the hood, here's exactly what to do — step by step. This guide will help you figure out what's wrong and whether you need a tow or can safely drive to a shop. Not sure what your dashboard warning lights mean? We have a guide for that too.

WHAT TO DO RIGHT NOW

Your engine is overheating. Follow these steps in order.

Pull over safely and turn on your hazards

Get off the road as soon as it's safe. A parking lot or wide shoulder works. Don't block traffic — but don't keep driving either.

Turn OFF the AC, turn ON the heater

This sounds backwards, but your heater core pulls heat away from the engine. Crank it to max heat, max fan. It might drop the temp gauge a few degrees.

DO NOT open the hood or radiator cap

The cooling system is pressurized and can be over 100°C. Wait at least 20 minutes for the engine to cool. Opening the radiator cap on a hot engine can cause severe burns.

Check coolant level (only when cool)

Once the engine has cooled, check the coolant overflow tank. If it's empty, that's almost certainly your problem. Do not open the radiator cap if it's still warm.

If there's steam or smoke, stay away and call for help

Steam from under the hood means the coolant is boiling over. Smoke (especially sweet-smelling) means coolant is burning off on hot engine parts. Either way, keep your distance.

COMMON CAUSES

Low or leaking coolant

The most common cause. Look for green, orange, or pink fluid under the car. Even a slow leak can drain the system over weeks.

Failed thermostat (stuck closed)

The thermostat regulates coolant flow. When it gets stuck closed, hot coolant can't reach the radiator to cool down. Usually a cheap fix — $150-$300 at a shop.

Broken water pump

The water pump circulates coolant through the engine. If the impeller breaks or the bearing seizes, coolant stops flowing. You'll need a tow for this one.

Failed radiator fan

Your radiator fan pulls air through the radiator at low speeds and idle. If it fails, the car overheats in stop-and-go traffic but may be fine on the highway.

Blown head gasket

The serious one. Signs: white smoke from the exhaust, milky residue on the oil cap, bubbles in the coolant reservoir. This is a $1,500-$3,000+ repair.

Summer heat + stop-and-go traffic

On 30°C+ days, older vehicles with marginal cooling systems can't keep up — especially in Saskatoon traffic on 8th Street or Circle Drive.

CAN I DRIVE TO A SHOP, OR DO I NEED A TOW?

Find your situation below. If you need a flatbed or wheel-lift tow, we can explain the difference.

Temperature came back to normal after cooling + coolant level is OK

DRIVE WITH CAUTION Drive cautiously to the nearest shop. Keep the heater on, watch the gauge closely, and stay off the highway. If it climbs again, pull over immediately.

Coolant is empty or leaking visibly onto the ground

DO NOT DRIVE — CALL A TOW Do not drive. Running an engine with no coolant — even for a few minutes — can warp the cylinder head or crack the engine block.

Steam or smoke is still coming from under the hood

DO NOT DRIVE — CALL A TOW Do not drive. Something is actively boiling or burning. The engine needs to be inspected before it's safe to run.

Temperature gauge goes back to red within minutes of driving

DO NOT DRIVE — CALL A TOW Stop immediately and call a tow. The underlying problem isn't resolved — continuing to drive is risking catastrophic engine damage.

There's a burning smell or unusual colored smoke

DO NOT DRIVE — CALL A TOW Do not drive. A burning smell often means coolant or oil is hitting hot engine components. This needs professional diagnosis.

When in doubt, get a tow. Driving an overheating car can crack the engine block — that's a $3,000-$8,000 repair vs a $150 tow. If you're broken down on Highway 11 or Highway 16, we cover those routes daily.

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PREVENTING OVERHEATING

Most overheating problems are preventable with basic maintenance.

Check your coolant level monthly — it takes 30 seconds with the hood open

Flush and replace coolant every 3-5 years (or per your owner's manual)

Inspect belts and hoses for cracks, swelling, or soft spots when you get an oil change

Watch your temperature gauge in summer — if it starts creeping up, don't ignore it

If your car has been running hot, get the cooling system pressure-tested before summer

OVERHEATING FAQ

DON'T RISK YOUR ENGINE

If your car is overheating and you're not sure whether it's safe to drive, call us. We're available 24/7 across Saskatoon, Blaine Lake, and everywhere in between. A tow is always cheaper than a new engine.