Why is diesel engine oil still black after an oil change? 🤔#mechanic #kia #koreancars #carrepair

Only downside on engine flushes on older engines is that you might get oilleaks at places that got clogged up by dirt that you just opened up.. otherwise its good to do it once in a few years to keep the inside clean

5-6k oil changes on me turbo powered diesel engine - "oil is cheap.. Engines are expensive..."

A clean engine is a happy engine 💪.

I get oil changes frequently and some garages go oh you have only done 5000 miles. Yes of short journeys with maximum wear. Long warm engine journeys are better for engines.

Don’t most mechanics advise not to do this as long as there’s been regular oil changes as modern synthetic oils already have cleaning agents in them

That's what I can't get through to some people, you cannot get every single drop of old engine oil out of the engine in an oil change so as soon as you fill it with fresh oil it's going to mix with any old engine oil left in the oil galleries, oil pump and any nooks and crannies in the engine so you can run it for 30 seconds and dip it and it comes out looking black, I say the only way it looks clean after running it for seconds is straight after a full engine rebuild and even then it won't look like what you poured in unless the assembly lube is the same colour as the oil you stick in it.

I would not ever do "engine flush". Instead just change oil and filter at max 10 000 km (or equivalent in measurement units defined by those who married cousins). Plain and simple. Why? Configuration of the oil pan does not allow complete drainage - so you will have half a litre or so old oil + "flush" chemicals left. Stop and think!

You could just put 2L of diesel in there and run it for 30min...same result

It didnt work very well on my Tesla, made a right mess

Best oil flush is to change the oil twice at the same time, first with a cheap oil and new filter, run 2 minutes, then with expensive oil. Check oil after a week and it will look like a gas engine

I always put it in before oil change. No need for doubling up your oil use.

Engine flush is like cholesterol clean for the engine

Change my oil 3 times a year on my 24 year old vw t4 2.5tdi.........comes out black as night every time!!! 😮

😂😂 How do you get all the oil 'flush' out of your engine..oil ways, galleries, oil pump, etc..before you fill with fresh oil..😂😂😂

On any diesel, especially a turbo diesel, 6000 miles should be regarded as overdue for an oil change. A tank of BP Ultimate diesel costs us £130 for our Audi (it’s slightly better than Shell VPower diesel by the way) so £80 for Mobil 1 oil and £15 for a filter really shouldn’t bother you.

Change filter and oil regularly. Use full synthetic....all additives are snake oil

All i see is diesels. It's crazy, as a mechanic in the US we never see them. A diesel in a KIA?! Unheard of.

Better to do oil changes than engine flush which can damage some components. Just change the oil more frequently

Many additives are a gimic in my view

I like to chuck a couple litres of diesel in the top and let it run for 10 mins, much cheaper than proper flush and will actually get your engine clean, and no, its not going to break anything if you just let it idle for a bit!