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rech

Oil change, do you know if your car service shop drains or extracts oil from the top ?

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As i have many many years of experience in the trade, i have never seen these used on vehicles, however i have used them on boat engines where not only is the sump plug, normally not accessible you don't want to end up with with a bilge full of oil.

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9 hours ago, brianthainess said:

As i have many many years of experience in the trade, i have never seen these used on vehicles, however i have used them on boat engines where not only is the sump plug, normally not accessible you don't want to end up with with a bilge full of oil.

Edit :  I forgot to include the likes of excavators etc that my have a heavy under engine guard, and you don't want to lay on your back at a refuse site, been there done that, worst one for me was a fork lift at a abattoir with meat hanging from it, before i knew about these vacuum pumps. YUK !

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On 1/19/2020 at 4:03 PM, Lacessit said:

My mechanic drains the oil while it is still hot. He changes the oil on my Vios every 5000 km, explaining to me the extra cost is worth it in terms of engine life.

Cool if you're trying to get 500,000km out of the engine but how's the rest of the car going to be? By then you're likely to be tired of the car and ready for a fresh one.

 

Save your money. If you change the oil at the intervals described in the owner's manual, maybe 10,000km, the engine is still very likely to outlast other major components of the car.

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16 hours ago, brianthainess said:

As i have many many years of experience in the trade, i have never seen these used on vehicles, however i have used them on boat engines where not only is the sump plug, normally not accessible you don't want to end up with with a bilge full of oil.

 

Many years but not a lot of experience it seems. Extractors are used all over the world by more and more car dealers or service centers...

 

 

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5 hours ago, KeeTua said:

Cool if you're trying to get 500,000km out of the engine but how's the rest of the car going to be? By then you're likely to be tired of the car and ready for a fresh one.

 

Save your money. If you change the oil at the intervals described in the owner's manual, maybe 10,000km, the engine is still very likely to outlast other major components of the car.

 

 

And we are talking about a Vios !!!

 

 

 

 

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On 1/21/2020 at 1:51 AM, rech said:

 

Many years but not a lot of experience it seems. Extractors are used all over the world by more and more car dealers or service centers...

 

 

My wife arranged a dealership mobile service for her daily runner. They vacuumed the oil and replenished the oil.

Later I checked the oil level and it was above the hi-mark with a cold motor. The old oil hadn't been fully drained before replenishment and subsequently the new oil wasn't clean.

After a discussion I vented my frustration at the dealership manager and got the service redone at the dealership. Free of charge and I supervised. 

 

Oil pans have galleries to prevent scavenging during driving and there's no guarantee the suction tube has reached the lowest point. Nowadays motors tend to have a lower cover for aerodynamic purposes.

 

Opting to suck is purely a financial decision and it doesn't all come out come out without expertise..

 

Edited by alacrity
grammar
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13 hours ago, alacrity said:

My wife arranged a dealership mobile service for her daily runner. They vacuumed the oil and replenished the oil.

Later I checked the oil level and it was above the hi-mark with a cold motor. The old oil hadn't been fully drained before replenishment and subsequently the new oil wasn't clean.

After a discussion I vented my frustration at the dealership manager and got the service redone at the dealership. Free of charge and I supervised. 

 

Oil pans have galleries to prevent scavenging during driving and there's no guarantee the suction tube has reached the lowest point. Nowadays motors tend to have a lower cover for aerodynamic purposes.

 

Opting to suck is purely a financial decision and it doesn't all come out come out without expertise..

 

There are oil sumps out there that in no way would allow any flexy tube to get to the sumps lowest point via the dipstick tube, my Pontiac was one.

So what happens, any pan sludge/<deleted> and a few litres of old oil are mixed up with the new.

 

In fact the folk that do this suction draining thing could be making extra money by using the old irremovable oil as part of the new refill and charging you for it.  

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To make it clear as so many of you talk about what you do not understand and how things were done in 1920...

Just like boats, some modern cars are designed to have oil vacuumed and it can be totally extracted, maybe better than when you drain it on your car.

But I understand that modern time is not for everybody...

At least now you know.

 

 

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3 hours ago, rech said:

To make it clear as so many of you talk about what you do not understand and how things were done in 1920...

Just like boats, some modern cars are designed to have oil vacuumed and it can be totally extracted, maybe better than when you drain it on your car.

But I understand that modern time is not for everybody...

At least now you know.

 

 

Your key word was "some"......

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