Questions tagged [flush]

The action to purge a system of it's fluid either by gravity alone or by using new fluid to displace the old.

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20
votes
6answers
167k views

When is an engine flush a good idea?

I have heard really mixed opinions about the necessity of engine flushes. My quick research suggested that manufactures do not recommend doing them. In addition, I have heard of extreme cases of blown ...
15
votes
2answers
5k views

Brake flush vs. Replacing the brake fluid

Is a brake flush the exact same thing as replacing the brake fluid? Or is there a difference?
6
votes
1answer
25k views

What is the average radiator capacity on 6 cylinder engines?

Yesterday I drained the radiator on a 99 Monte Carlo. Owner's manual states that it should take 11.6 quarts (2.85 gallons). I removed the petcock, flushed the system by running a hose into the top ...
6
votes
1answer
966 views

How to flush coolant with only access to expansion tank?

OPEL CORSA B Sedan 1.6 IE 1999. I would like to flush the coolant and bleed my brakes. For the coolant, I have bought German HEPU antifreeze, Anyways, I only have a reservoir bottle and I do not ...
3
votes
2answers
3k views

To switch back to regular oil (from semi-synthetic), do I have to (or should I) flush the engine first?

I have a 2017 Elantra (nine months old). At my first oil change, the dealership (without my knowledge or CONSENT) out in semi-synthetic oil (which is NOT required or necessarily recommended by the ...
3
votes
1answer
96 views

What is the difference between old engine oil and old gasoline and how it affects a car

This happened in the mid 1990s and something made me think of it right now. A family friend ran out of gas 3 blocks from his house. I think he was driving an early 1970s car (if that matters). He ...
3
votes
2answers
5k views

Using vegetable oil to flush engine of gunk

I've been told by a mechanic friend of mine that AFTER I've used engine flush I can put in vegetable oil, run engine for a short while then drain. He says that as the veg oil is sticky, it'll help ...
3
votes
1answer
36 views

Is it safe to flush it?

I've got a 1989 Chevy Cavalier sedan. 78,000 k. Previous owner let it sit for 7 years. I've drained and replaced the oil, fuel filter, hoses and such. But my coolant tank is completely encrusted in ...
3
votes
1answer
95 views

How often and how thorough should a coolant flush be?

I have a 2005 Mazda Bounty UTE. How often should it have a coolant flush? I have since seen videos which suggests a flush should be a number of cycles of empty, new water, empty, new water, empty etc ...
3
votes
0answers
2k views

What else should be changed if I already have the oil pan off for cleaning?

I have a 2005 Chevy Suburban 1500 4WD 5.3L with 187000+ miles. It has a really bad tapping/knocking sound. I think this is the infamous lifter knock, and was caused by infrequent oil changes and ...
2
votes
1answer
133 views

Rubber pieces found in engine coolant

ISSUE: I found small pieces of rubber debris in the coolant. They are a little smaller than part of a fingernail clipping. The rubber hoses have flaking rubber when inspecting them on the inside. ...
2
votes
1answer
1k views

How should I flush out a head gasket sealer?

I purchased a 2002 Ford Taurus, little knowing that it had a head gasket leak. After it was driven for a week or so it started overheating. I am assuming that the person that I bought it from put ...
2
votes
0answers
56 views

Stuck in catch-22 trying to fix radiator leak

I'm trying to use a stop-leak solution to fix a leak in the radiator, but I'm stuck in a catch-22. The stop-leak instructions say to flush the coolant system if it is dirty or clogged. I don't know ...
1
vote
1answer
69 views

How long can I run radiator flush in my car?

My cooling system is quite nasty and needs a flush. I followed instructions on radiator flush, which said to run the car no more than an hour. However few tutorial videos online suggest running ...
1
vote
1answer
58 views

Should an automatic transaxle be pressure flushed?

The statement "Never pressure flush the CD4E..." worries me a bit. Should it?
1
vote
1answer
33 views

Oil Pressure Warning Light on Fiat Ducato

I just bought a 2010 Fiat Ducato Maxi Multijet 120 manual transmission. On the way home going up the mountain when I would shift gears the engine oil pressure warning light would momentarily go on ...
1
vote
1answer
61 views

Is this shop trying to take me? [closed]

hi hello greetings and salutations, oh... and HOWDY, yawl. Just acquired me a used and mysterious 1998 5.4 v8 ford van. I didn't know much about it other than it was runnin ok, I guess. Took her to ...
1
vote
1answer
536 views

How to flush a cooling system after head gasket failure?

I recently replaced the head gasket in my Renault K9K (700) 1.5 DCi, due to a cylinder/cooling system type failure. As such, the cooling system is full of partially burned diesel. Despite having ...
1
vote
1answer
7k views

Is engine flush safe and should I do it?

Garage put some oil in car and after I checked the dipstick it looked black and thick. Car has since been running sluggish and the cause might be the oil(though this work followed an overheating ...
0
votes
1answer
65 views

What is the difference between flushing and draining? And can flushing be a bad idea?

I have seen videos on YouTube saying that flushing your engine or transmission oil can sometimes cause damage on old vehicles which didn't have regular oil changes done to them. Is there any truth ...
0
votes
0answers
12 views

Coolant flush and water in radiator below freezing 30-32 degrees F

My question is the water and coolant flush going to screw up my radiator when the temprature drops below water freezing tempratures
0
votes
0answers
34 views

Water-to-air intercooler - isolated or shared coolant?

I have a 2016 Ford Transit. But answers that apply generally will be fine too. It has a turbo and a water intercooler. I did a coolant flush, but I'm wondering if they did it right. One shop said ...
0
votes
0answers
34 views

Flushed my Engine on a 2010 Altima

I stupidly was sold an engine flush on the 2010 altima with 160k miles. I am just wondering if I can expect my car to die in the next week or 2, or is it possible that it wont harm my car and I will ...