Hot answers tagged

23

If the thermostat is operating properly the radiator will only come into play when the thermostat opens, when the engine is at normal operating temperature (around 190 degrees, give or take). Adding a gigantic radiator won't make a bit of difference because if the engine gets too cold, the thermostat will close, causing the engine to heat up again. In the ...


22

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, or damaged oil cooler (if the car uses radiator coolant for cooling the oil). The first two items are not trivial to replace or fix. The third one isn't far ...


21

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 another few tens of kilometers on the odometer before you even consider such a vehicle. If the seller is topping off the radiator with oil instead of water, ...


14

In the case where you run it too hot, you could start messing up your head gasket or warping the head itself. If you have to, in a warm climate, use distilled water or just keep replacing the antifreeze until you can get it somewhere, after which you'll have to have the whole system flushed. If you live in a cold climate your engine block could freeze and ...


13

Lets start with the fact that Ford doesn't make anti-freeze, they buy it in. It will have certain specs of course but so does all anti-freeze. It will also be made by one of the major producers of the product. If you can find the Ford specs you could compare it to other brands. Alternatively, contact the makers of different brands of anti-freeze and ask them ...


10

I would not recommend driving with an empty radiator, that could cause the engine to overheat as well as damaging the water pump.


10

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 longer than that may cause the engine to overheat.


10

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 radiator with oil and started your car and let it run for awhile I would be most concerned with damage to seals that were designed to withstand water and glycol. ...


9

Normally, I would ask first in a comment but that seems to be a privilege not available to new users, so here goes: Are you sure it was the radiator cap and not the overflow bottle? The radiator is usually full and getting 100ml in would be a struggle, not to mention that the green coolant would be staring you in the face. If you radiator wasn't full then ...


9

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, block, or head. It'll also attack (vigorously) any rubberized gaskets that're in contact with coolant. Even disregarding outright measurable damage, it'll release ...


8

I doubt the fluid is overflowing. You most likely have a leak somewhere. Common locations: The plastic container that you top off has a leak. (Check underneath it for puddles, also make sure the hose between it and the radiator is not leaking). Radiator (Look on the bottom for drips, it is typically behind the grill in front of the engine) Water Pump ...


8

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. A washing machine is made of (in most cases) a steel drum coated with porcelain, or stainless steel, both of which are very sturdy and are made to last a long ...


8

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. To give you an example of how it could be beneficial: I used to own a 94 Camaro Z28. The engine in it was a Gen-II LT1 350. This engine has what's called an ...


7

As long as you don't mix the two coolants together you should not have any problem. I run "green" coolant in my GM that came with Dexcool, and have been for more than 5 years. You do want to check the ratio of coolant and water as straight coolant (or too much compared to water) will not cool as well. To answer your question I wouldn't bother switching, if ...


7

First thing I'd try to figure out is how quickly it leaks - run it, stick your head underneath it as check if there is any visible leaking. If there is, chances are that it's not going to make it for 30 miles. I'd also check for any evidence of oil and water mixing. If there is, don't drive it. If it's not leaking that badly I'd be tempted to top it up with ...


7

I agree with Timo - if it is a big enough leak that you can see it clearly, then getting the car transported is much safer. In general, using water as coolant is OK for a short time or as a "get you home" alternative, but it does not have the anti-freeze and corrosion inhibiting properties of a proper coolant mix, so should not be left in the engine for ...


7

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 similar. Clean the site of the repair, and rough up the surface with fine sand paper, especially if working on plastic. Mix the two-part epoxy and generously ...


6

It depends on how much you are leaking. I've had a leak in a radiator and had to take it somewhere a few times, here's what I usually do. Fill the radiator completely full of water. If you can get it loaded, and it takes more than a few minutes to drain, you can proceed to step two. Drive slower than normal to your destination. Keep a spare gallon of water ...


6

Antifreeze is a blend of several different ingredients: the antifreeze/coolant active ingredient, (mostly) water, corrosion inhibitors to prevent the water from rusting away the inside of your engine, and a secret blend of herbs and spices that's particular to each manufacturer. There are several different choices for the active ingredient (ethylene ...


6

The thinner radiator might make it easier for the cold air to flow through the engine compartment. (The radiator itself wont cool an already cool engine at all if the thermostat is intact.) In cold environments it is often necessary to use a grille cover to limit cold air flow to the engine. Grille covers are especially necessary with small diesel engines ...


6

The main thing the higher pressure cap will do is to increase the boiling point of the coolant slightly. 3psi isn't going to make a huge difference, but it will make some difference. If your cooling system is in good shape, the higher pressure unlikely to cause problems. If your cooling system is already on the way out, well, then it'll be on the way out a ...


6

Yes, it will. However, your biggest concern is going to be getting enough air flowing over it. Do yourself a favour and go look at the engine bay of a 200x model Subary Impreza WRX. The intercooler is mounted flat on the top of the engine and the characteristic scoop forces air onto it to cool the intake air. The same type of thing might work for your ...


6

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 (normally with no temperature notification/change, if anything it'll read cold). When the water pump is on with the timing belt (or geared to crankshaft as is ...


6

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 seals fail. It is on the bottom of the pimp and difficult to see. You may be able to feel it by reaching under the pump, it is a small hole about half the ...


6

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 using metal putty/epoxy to seal the existing crack. My dad used to own a Maxima that developed a crack in the radiator's aluminum head. The mechanic he took ...


6

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 enough fluid and pump is just attempting to push air through the system. Some engines have block drain plugs. You would need to remove those, allow to drain and ...


5

If you are willing to drain the coolant, most radiators can be brazed or welded to fix pinholes.


5

A much cheaper option then towing, but which will ensure that nothing gets damaged, is for you just to fix the leak temporarily on the spot with some putty. I've seen cheap putty specifically for the purpose of fixing leaking radiators sold at many gas/petrol filling stations.


5

You need to drain the coolant and replace it. You should follow the instructions in your owners manual. If you don't have one handy, the ehow page is a fairly general set of instructions but it'll get you into the right general location for the coolant drain. Keep in mind, engine coolant is toxic and should be disposed of properly. This is a perfectly ...


5

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 really awkward mess trying to work around it. The second reason is for compactness. With the water pump stuck out of the way, it physically makes the engine ...



Only top voted, non community-wiki answers of a minimum length are eligible