24 votes

Will having a radiator full of engine oil do damage to the motor?

The seller should not be selling the vehicle with oil in the cooling system. That supposed "quick fix" should have been rectified at the earliest opportunity. Have him flush the cooling system and put ...
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  • 1,713
22 votes

Will having a radiator full of engine oil do damage to the motor?

I would be more concerned about whether engine oil is actually finding its way into the radiator from the engine. If it is, this would be indicative of a compromised head gasket, warped cylinder head,...
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  • 39k
17 votes
Accepted

Can you run an engine without a radiator?

It can absolutely be started without a radiator. You will not cause any damage as long as the engine does not overheat. If you don't run it long enough for the engine to get too hot, it's not an issue....
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17 votes
Accepted

Replacement ford fiesta radiator has extra hose

What you've been sent is the radiator for the diesel variant - as opposed to what appears to be the 1.25l Zetec petrol engine in your first diagram. You're correct in that the "main" radiator ...
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  • 9,773
17 votes

Should I accept this help in fixing a 1" hole in my radiator?

Do it right the first time. In the best case the "quick and dirty"-fix fails at the first pressurization, in worst case when you need it at most. What should concern you more: How does a ...
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  • 7,828
16 votes

Should I accept this help in fixing a 1" hole in my radiator?

Aluminum foil is at best a very temporary fix to get you to the mechanic, it's not a long-term solution. Your mechanic is right, the hole shows that there's damage to your radiator, probably due to ...
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  • 14.6k
13 votes
Accepted

Is it all right to clean a car radiator with vinegar and chlorine?

I would definitely not intentionally put sodium hypchlorite bleach in my radiator. Vinegar is one thing, but the sodium hypochlorite will attack anything aluminum in your radiator, intake manifold, ...
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  • 2,534
13 votes

Why would a water pump be run off of the timing belt?

I think the main reason for this is convenience. It's an easy place to run the water pump. If you ran it out to a fan belt, it would be in the way of the timing belt while doing it, or it would be a ...
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13 votes

Will having a radiator full of engine oil do damage to the motor?

Yes, it's possible some of the seals designed to withstand water and glycol could get damaged I am thinking you are creating a fictitious scenario here, so I'll roll with it. If you filled your ...
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  • 32.8k
11 votes
Accepted

Why would a water pump be run off of the timing belt?

Engine safety. If you lose an accessory belt driven water pump, you're likely to keep driving, thinking the "oh, I just don't have an alternator" while you're busy cooking your engine beyond repair (...
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11 votes

Can you run an engine without a radiator?

An engine is a very large thermal mass. When the engine is cold it takes time to warm up. If you only run the engine for 15 to 30 seconds from cold there should be no problem. Running the engine any ...
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  • 15.9k
9 votes

Losing coolant fast after just fixing radiator

They may not have bled your cooling system properly As a possibility, if you had air trapped in your cooling system it would expand as the engine approached operating temperature. It would ...
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  • 32.8k
9 votes

I put Adblu in radiator coolant tank in Peugeot Boxer 435 Onnicar

ADBLU is a mix of uric acid and water, and you don't want acid in your cooling system as it can cause corrosion. It's not a disaster, you just need to drain your coolant out of the system and refill ...
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  • 14.6k
8 votes

Is it all right to clean a car radiator with vinegar and chlorine?

I would not use that solution to clean my radiator. Remember that a radiator itself is primarily made of fairly thin aluminum. The bleach/vinegar could very easily damage the structure and weaken it. ...
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8 votes
Accepted

Cleaning mud from motorcycle radiator

I use a garden weed sprayer, its less powerful than a high pressure washer yet can have its jet aimed in a small area. Additionally you can fill it with hot water which will help loosen the mud. ...
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  • 2,645
8 votes

Will driving car without coolant cap do long term damage to car?

If you didn't overheat the car, then you've done no damage. The radiator cap seals the system and allows pressure to build (to a point), which raises the boiling point of the coolant. This allows it ...
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7 votes
Accepted

Coolant/antifreeze leaking out of engine block (See photo/video)

I appears to be coming from the front and the center of the engine. I could be a hose near the water pump. The water pump itself may have failed. Most water pumps have a weep hole that drips when the ...
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  • 19.7k
7 votes
Accepted

Can a blown head gasket cause overheating, without losing coolant?

Yes, it's possible. Also, the bit you lost that you think may be a leaking pipe is actually being turned to steam and blown out your exhaust. The car runs fine until the engine gets hot enough for the ...
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7 votes
Accepted

How can I fix my cracked radiator temporary for a trip? Is there any way to do it?

If you can see and access the crack, a two-part epoxy or something like JB-Weld can be great for a temporary fix. This page shows the process on a metal radiator for a race car, but your fix would be ...
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  • 13.2k
7 votes
Accepted

Excessive Coolant Expansion: Part 2

It's possible that the impeller blades on the water pump are either compromised or gone completely. I ran into a somewhat similar situation with a Chrysler. The engine would not overheat driving. ...
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  • 15.9k
7 votes
Accepted

How to remove coolant hose from T piece

Yes, you need to cut them - difficult but possible with sidecutters, they do make special cutters for these, but you can grind them : be very careful where the sparks go : cover everything... For ...
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  • 34.4k
7 votes

How can I fix a mixed coolant problem?

"Green" coolant is usually considered a typical coolant. It should get changed out about every two years. "Orange" coolant implies Dexcool, which is the stuff used in GM vehicles and is a long life ...
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6 votes

Can I drive a car with only water and no coolant if it has a leak?

I am glad you got a good outcome, but would like to answer because I have a fair amount of experience with difficult cooling system issues, and the most recent one occurred while I was over 1,000 ...
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6 votes

Coolant level is below "low" in the expansion tank, dealership service says this is normal?

There is nothing inherently wrong with what the service manager told you. (As an aside, service managers and mechanics are looking for add-on work. They get paid more money for this work than work you ...
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6 votes

Infamous WRX/XT overheating problem

I think this points at the thermostat being bad. The reason I go in this direction is due to there being no heat coming from the heater vents. I'm not sure if Subaru has it this way, but many heating ...
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6 votes

How can I fix my cracked radiator temporary for a trip? Is there any way to do it?

Putty/epoxy works but here's a handy tip I picked up from my materials professor to ensure that the crack doesn't propagate: Drill small holes at the ends of the crack to arrest its growth before ...
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  • 39k
6 votes
Accepted

Why is antifreeze mixture not as stated?

The difference you observe is quite notable, so I wondered how reliable it is to just measure the density (which is what your hydrometer does). From the datasheet of your Ford antifreeze, the density ...
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  • 7,007
6 votes
Accepted

What is the average radiator capacity on 6 cylinder engines?

Once your system expels as much fluid as it can via the pump there is still an additional amount of fluid that is left in the block and other areas that the pump can't push out because there isn't ...
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  • 32.8k
6 votes
Accepted

Radiator leak 92 subaru, repairs possible or replace?

Radiators are pretty simple to replace. If you've never done it before, look at some youtube videos, and set aside about 4 hours for it (90 minutes, if you're handy with a spanner). Repairs on ...
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  • 8,612
6 votes

Radiator Water Issue

You want to make sure you do not put tap water into the cooling system on your vehicle. The cooling system has a leak, which is why you need to refill it periodically. Look on the ground where you ...
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