What does an engine flush do?

[TNTrulez]

Jiffy Lube says that my friend's car needed an engine flush. They say that the oil is black and it will damage the engine without the flush. So do you think it is worth it?

 

[McPhreak]

Originally posted by: TNTrulez
Jiffy Lube says that my friend's car needed an engine flush. They say that the oil is black and it will damage the engine without the flush. So do you think it is worth it?

isn't oil in the engine supposed to be black?

 

[Tominator]

There is no need to 'flush the engine!' It is selling something with no need. I'd never go back to that shop.

This is common practice at chain store lube shops.

 

[dawks]

Its supposed to be a light transparent brown.. (In most cases)

How many miles does your vehichle have on it?

I havent heard of a engine flush really, but more often transmission flushes. They basically pump oil into the engine, and suck it out the other end. Along the way it picks up all the dirt and such.

 

[boyRacer]

My friend got his oil changed there once... all they did was change the transmission fluid and put engine oil in there... WTF...

 

[KokomoGST]

Well, you only really need to flush the engine if you're completely paranoid about having a tiny bit of old oil in there or you've got some oil sludge in there.

Some 0W-30 filled and drained is a good "flush"...
The first time I was changing the oil after I bought the car used. I used some extra 10W-30 synth I had...

Drained old oil, closed the drain plug, filled it with new oil... idled car for a short time and then drained it then filled again.. Got most of the old oil outta there. So I flushed with 10W-30... some companies specifically make super light flushing oils.

After that, there's never a real need for a flush if you change at regular accepted intervals.

 

[Soybomb]

An engine flush is supposed to loosen dirt and grime so it flushes out. Alot of times though it just loosens dirt that wasn't harming anything and causes it to flow somewhere where it will (stuck in smaller passages, block some of the oil pickup tube, etc). No he doesn't need one.

 

[notfred]

Originally posted by: McPhreak
isn't oil in the engine supposed to be black?

Remind me never to buy a used car from you.

 

[McPhreak]

Originally posted by: notfred

Originally posted by: McPhreak
isn't oil in the engine supposed to be black?

Remind me never to buy a used car from you.

well, when you empty the used oil from your engine, what color is it?

 

[notfred]

Originally posted by: McPhreak

Originally posted by: notfred

Originally posted by: McPhreak
isn't oil in the engine supposed to be black?

Remind me never to buy a used car from you.

well, when you empty the used oil from your engine, what color is it?

That's like saying food is supposed to be brown and smelly cause that's what it looks like when you take a sh!t.

Anyway, when I change the oil in MY car it's dirty, but definitely not black yet.

 

[ThisIsMatt]

Originally posted by: notfred

Originally posted by: McPhreak

Originally posted by: notfred

Originally posted by: McPhreak
isn't oil in the engine supposed to be black?

Remind me never to buy a used car from you.

well, when you empty the used oil from your engine, what color is it?

That's like saying food is supposed to be brown and smelly cause that's what it looks like when you take a sh!t.

Anyway, when I change the oil in MY car it's dirty, but definitely not black yet.

Haha, nice analogy And I agree, it should never be black.

 

[McPhreak]

Originally posted by: notfred

Originally posted by: McPhreak

Originally posted by: notfred

Originally posted by: McPhreak
isn't oil in the engine supposed to be black?

Remind me never to buy a used car from you.

well, when you empty the used oil from your engine, what color is it?

That's like saying food is supposed to be brown and smelly cause that's what it looks like when you take a sh!t.

Anyway, when I change the oil in MY car it's dirty, but definitely not black yet.

Note that I said "oil in the engine" and not "engine oil" in my first post. Your analogy is completely wrong.

Most of the engine oil I've seen coming out of the engine is a dark brown/black, that's why the rhetorical question.

 

[boyRacer]

Well when i change mine... it's definitely dark... and it smells pungent burnt oil... ...but i have an ooooold POS car and it burns and eats my oil like theres no tomorrow...

 

[Tominator]

The appearance of the oil has absolutely nothing to do with it being dirty or clean or bad or good.

A motor oil cannot be judged by it's color....

 

[JC]

Originally posted by: Tominator
The appearance of the oil has absolutely nothing to do with it being dirty or clean or bad or good.

A motor oil cannot be judged by it's color....

True dat.....change the oil in a diesel engine, start it up to circulate it, and it's all black again, just like before you changed it.

JC

 

[Mill]

nm