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22nd April 2019, 17:33 | #31 |
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Well, this thread started off with a dim view of extraction pumps. It's now leaning towards a favourable view. Method will always be what the individual feels is right for them. For me, I'm favouring the extractor, simply because I won't have to scrabble around under the car.
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22nd April 2019, 19:12 | #32 |
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Pela for me. No problems in 12 years.
Wish I could use it on my beemer. No dip stick!!!!😞 |
27th April 2019, 18:59 | #33 |
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The Pela was meant for boat engines.
Think of all those ruined engines if it didn't get all the old oil out.---- |
28th April 2019, 07:20 | #34 |
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Well as a newcomer to extraction pumps I cannot cite a long history of use - but I can confirm that I too check the volume of the extracted oil and I am confident that very little, if any, gets left behind.
And as I change the engine oil at half the stated interval - I really don’t see the problem. On my old LR’s you had no undertray and could run two wheels up onto an old plank to ensure the sump was “leaning” towards the drain hole then get underneath with ease and filter off, drain oil - drink your cuppa while last drops come out, new washer, replace plug, fill new filter with oil, screw on, fill engine, check level - and job done. Easy. But doing this on a ZTT with its undertray and low ground clearance is just not the same attractive proposition as on a LR. So, I lift the bonnet, put in the tube after removing the dipstick, being carful to ensure it goes in as far as it needs to and no more (the pipe on my pump is quite rigid) extract the oil whilst drinking the tea, change the top mounted oil filter (lovely design!) when pump has done its job, check volume extracted and replace with new oil. What could be simpler or more satisfying? Am I bothered if a bit of oil is left in there? Not at all because it has only been in there for about half its recommended time anyway. Besides - by my observations I get out the volume I put in! But just say for arguments sake I left a quarter of a litre in there (I don’t think I do but let’s play pretend!!! ) then 250ml / 6.8litre x 100 = 3.7% So that means I would have changed 96.3% of the oil in my engine. |
29th April 2019, 18:49 | #35 |
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And I just undo one sump plug, and it all comes out, muck and all.
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29th April 2019, 19:29 | #36 |
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Well, it's me, I don't measure the oil coming out which is drained after getting the engine quite warm, and leave it until there are no drops within ten seconds. I then don't measure the oil going in, but add every ten minutes, then start to measure the dipstick until I have a satisfactory level. Works for me. Oh, that's from the sump drain plug and no spills.
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30th April 2019, 06:14 | #37 |
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30th April 2019, 08:10 | #38 |
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30th April 2019, 08:19 | #39 |
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It's obvious we are not all going to agree on this one lol.
I started using the vacuum method and am very happy with it. I have yet to see this so-called muck on any engine I have ever worked on. The only time I have seen anything I didn't like was the "mayonnaise" that built up in the rocker box of some engines years ago. Just make sure what ever type you buy, it has quite a rigid pipe so that it goes straight down to the bottom of the sump without curling or you will not get all the oil out, and maybe get it stuck on removal.
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30th April 2019, 09:28 | #40 | |
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Quote:
If this was a common occurrence then it would wipe out ANY advantage of an oil change via this method. As for ‘muck’ - this does build up in a sump and in my view should stay there. The idea of it floating about so it can flow out the drain plug does not fit at all with the hard “goo” that I remove with a scraper and then wash out with Gunk on any sump I have removed. |
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