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Mar 30, †∑ The steps involved are discussed below: Step 1: Adding the Engine Flush Treatment. Park your car in a safe and relatively flat area and bring the engine to full Step 2: Allowing the Flush Treatment to Run through the Engine. After successfully adding the required amount of engine Step 3. Nov 16, †∑ Car used - 08 Chevy Malibu L Ecotec. Engine Flush used - Kleen-floBiweekly How To #47Kleen-flo Products - lovealldat.com Quad Proof Camcoder -.
When you come in for an oil change, some lube shops; dealerships; and other businesses may try to sell you a crankcase flush. This service may also engie called a motor flushhot oil flushor engine flush. What exactly is a crankcase flush? Glush service what to expect during 12th week of pregnancy adding a solvent or strong detergent to your engine oil; running the engine for a little while to let it circulate through; and then changing the engine oil and filter.
These chemicals are supposed to break up and clean out the gunk, varnish and build-up that can form inside your engine, allowing it to be drained out with the engine oil. While this sounds great in theory, there are four main reasons why these services are a bad idea:.
While varnish and sludge can build up in a poorly maintained engind, this normally never happens when your oil changes are performed regularly. Even if your engine has been a little engien for a while, new oil contains detergents that will safely clean your engine over the coming months and years.
The vast majority of engines on the road are quite clean inside, and will stay that way as long as their maintenance is kept up.
Almost every vehicle manufacturer has released technical service bulletins or other documentation where they recommend against performing crankcase flushes. Not only is the service unnecessary, they say, but it can also damage your engine. If your vehicle is under warranty and you experience an engine failure, the servicing dealership will likely ask you to produce your maintenance records.
If your maintenance receipts include a record of fngine a crankcase flush, some manufacturers will deny the warranty claim. As General Motors alludes to in the publication above, engine flushes can damage your engine. The chemicals in flushing additives can damage engine seals, leading to fluxh repairs in the event of an oil leak. These chemicals can also damage engine bearings; turbochargers and other oil-lubricated components.
Here is part of a service bulletin from Mazda, who also recommends against engine flushes:. At My Garage, we are major proponents of maintaining your vehicle properly. Have any questions? Please feel hw to call or message us at any time! Proponents of engine flushes may show you photos of extreme engine sludge like this fush. The fact is that no normally maintained engine ever gets anywhere near this bad, and if it does, the damage is already done ó the engine is worn out and beyond repair.
Most properly-maintained engines are clean inside.
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This service may also be called a motor flush, hot oil flush, or engine flush. What exactly is a crankcase flush? This service involves adding a solvent or strong detergent to your engine oil; running the engine for a little while to let it circulate through; and then changing the engine oil and filter. Jun 05, †∑ Start by parking your car on a surface that is both dry and flat. You can then use wheel chocks so that your vehicle will not move while youíre working. Wait for at least an hour after you turn off your engine before attempting to flush your radiator. Place your hand near the car radiator to get an idea of the carís heat level. Oct 31, †∑ I collected a sample before I added the flush. Then I added the flush (to warm oil), ran 10 min per LM's instructions, drained and collected a second sample which was lower viscosity than the first obviously due to the water-like viscosity of the flush. Just making sure you understand/think there was some confusion. Pre and post-flush samples below.
It only takes a minute to sign up. Connect and share knowledge within a single location that is structured and easy to search. 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 engines after engine flushes. An engine flush is basically the process in which a mechanic puts chemicals in the engine oil to break down sludge or carbon deposits from old oil. The difficulty with it is that it can break down sludge that had formed over rubber seals and is actually serving as a secondary engine seal.
Furthermore, if your engine has had regular engine oil changes at the specified times, a flush should be totally unnecessary. If you do have serious sludge build-ups, it could be the best route to take; but you're taking it at a risk.
If the sludge is actually protecting the rubber gaskets, you may have a bigger job on your hands replacing them.
I'll do an engine flush as soon as I see it recommended in the factory service manual. My opinion is to let sleeping dogs and oil particulates lie. It sounds like a good idea on the surface, but as explained in the other answer; once an engine is old enough that a mechanic thinks an engine flush would be a good idea, then it's too late.
And if the engine flush is not thought of as a good idea.. The exact timing of when to do an engine flush depends on when the mechanics next Boat Payment is due. I'm disabled so cannot afford a garage to do the easy stuff, but I also get satisfaction from doing things myself. Is it necessary, NO, but I like the fact that my oil never goes black from soot from the EGR system and the cost of doing it twice myself even with fully synthetic oil is still less than a quarter a garage would charge me to do it just the once at least here in the UK and I know it has been done, unlike some of the horror stories you hear about from the 'specialist' garages.
My understanding of the engine flush process appears to differ from everyone else that has commented or answered so below is my take on it. An engine flush engine oil or transmission oil is the process in which ALL of the oil is drained from the system and re-filled; this does not necessarily mean that additives are added to break down sludge and inadvertently cause issues with seal.
For instance my car has 12 quarts of transmission fluid. If I simply drain it from the bottom I only get 3 quarts so I only have to fill 3 quarts. If an engine flush is performed then they need to put back in the exact same amount of oil which they took out. So if they truly flushed 12 quarts via an oil vacuum then they need to put back 12 as well.
In this lies the problem. When filling the transmission with oil they might not reach all of the places where they took it from. There are a LOT of nooks and crannies which might not get lubricated unless you knew to specifically target those areas. If a nook or cranny is left unfilled then YES, you can absolutely experience a blown transmission.
Do NOT ever let them talk you into doing an engine flush. At one of my top offs I was told I would need to get my system flushed cause there was a lot of sludge and such.
Well I had them do it at my next oil change. My engine was knocking something bad. Had to end up getting picked up and my vehicle towed back. Which my dad vehicle guru and guy who towed it my good friends friend have both confirmed that it my engine is shot. Had I not gotten the flush done, I would still have my vehicle. I just did an engine flush with 20 percent Marvel Mystery Oil in my crankcase with fresh Mobil 1.
Sure, the low pressure oil light began to flicker after miles, but it disappeared after I changed the oil again. The car is is 23 years old and has 60k miles, all stop-n-go, and the oil was changed on time so there was no excessive sludge visible on the oil filler neck.
Now, the tachometer no longer fluctuates at idle. I have seen MMO flush correct fluctuating tach on several cars over 30 years. It is most likely because lower piston rings tend to stick on old cars, even if the crankcase oil is changed regularly. The main risk with a flush is particles dislodge and clog oil passages, especial the oil pump pick-up screen.
It is not necessary to change it so frequently if used before the car reaches 50k miles. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams ó Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. When is an engine flush a good idea? Ask Question. Asked 4 years, 5 months ago. Active 3 years, 8 months ago.
Viewed k times. My mechanic performed an engine flush on my old car and so far, it seems to be ok. Is it safe? Is it necessary? What are the pros and cons of doing it? Improve this question. Zach Mierzejewski 1, 2 2 gold badges 17 17 silver badges 38 38 bronze badges.
Welcome to mechanics. We're glad you're here! I've cleared up your question a bit to make it less opinion based, and thus more on topic. Feel free to clear up my edits if I didn't communicate your intent correctly.
Why do you think that you may need to flush your engine in the first place? They are always a good idea if you are running a service operation, because they make you more profit. And if you are unscrupulous and running a service operation, most customers won't even know whether or not you did the flush, so long as you put it on the invoice After a leak e.
You want to clean that out thoroughly. Otherwise, probably never. Add a comment. Active Oldest Votes. Improve this answer. Great explanation. I have also heard of undissolved sludge in very bad cases getting lodged in oil passages and pickups causing more damage by lack of flow.
Run the engine warm at high idle for 15 minutes. Use 1 quart of Berryman's B12 Chemtool in the crankcase for five minutes before each oil change. Certain engine designs may be higher risk such as those which share engine and gearbox oil like the old A series or those with a turbocharger which uses the engine oil for the turbo. Do not use marvel mystery oil, it is a mineral oil and it will reduce the protection and lubrication properties of your synthetic oil.
See: mechanics. You should simply use semi or fully syntethic oil and change with intervals recommended by manufacturer. Actually, you shouldn't need to use any additives to keep your engine in good condition. Today, all the oils and gasoline already have necessary chemicals to do that job. PeteCon PeteCon 8, 13 13 silver badges 30 30 bronze badges. I believe a flush is a good thing, just not with chemicals.
If I drove a petrol car rather than a diesel van I probably wouldn't. David David 29 2 2 bronze badges. Don't you think you'd get the same or better improvement by doing oil changes twice as often than doing 2 oil changes each time?
I thought diesel require even less frequent changes at least according to vw Also the color of the engine oil does not define if it is doing its job or not. See the answer from VAG mechanic here: mechanics.
This same principle applies to engines, brake lines, and cooling systems. MonkeyZeus MonkeyZeus 1, 7 7 silver badges 13 13 bronze badges. Well for engines there is really no where for the oil to hide it just goes down the sump, of course after an oil change there will still be some old oil but a very small amount ó method Oct 28 '16 at Is this conjecture or would you have references to cover what you're saying?
The engine flush is removing the sludge that seals the seal. The OP is asking about engine flushing here, not replacing tranny fluid. And an engine flush isn't the same as an engine oil change ó Zaid Oct 28 '16 at Johnny that's true for some transmission boxes, especially automatic ones but not for engines. Automatic transmissions in general should not be drained empty if you dont happen to have special equipment and knowledge on that particular transmission unit, those wont be happy with air pockets inside and requires specialized air bleeding equipment.
That said, some units have air bleed valves, some are designed to bleed air out through dipstick pipe when unit is tilted to angle and some wont need anything special. Show 2 more comments.