reb78 Posted March 25, 2017 Share Posted March 25, 2017 What are people's thoughts on suction pumps for oil changes? I always worry they won't get everything out and so you end up mixing new oil with the carp left in the sump. On the other hand, lots of garages use them. Reason on for asking is that lidl have these in this week https://www.lidl.co.uk/en/Non-Food-Offers.htm?articleId=1723 Quote Link to comment Share on other sites More sharing options...
AMB Posted March 25, 2017 Share Posted March 25, 2017 I use one for the lawnmower, but wouldn't use it on a decent engine, for the same reason that you suggest. Quote Link to comment Share on other sites More sharing options...
reb78 Posted March 25, 2017 Author Share Posted March 25, 2017 As my engine ages and mileage goes up I am wondering about starting to do an interim oil change (no filters) at 3000 miles - maybe use the suction pump for this to make it super quick and then a proper (filters and drain via sump plug) at 6000 miles. The mower was my other plan for this pump too! Quote Link to comment Share on other sites More sharing options...
Simon Smith Posted March 25, 2017 Share Posted March 25, 2017 We use them on lawnmowers and garden tractors every day. I use the drain bung on the Landy, but I reckon you would get as much oil out with the pump if not more, as the drain is on the side of the sump, not the bottom. Quote Link to comment Share on other sites More sharing options...
Orgasmic Farmer Posted March 25, 2017 Share Posted March 25, 2017 (edited) Tried one (brothers) on my old BMW. Took ages, go and have a cup of tea while it does it's stuff. Then tried again. Moved it around. Pushed and pulled to make sure I couldn't get another drop out. Then just for fun I pulled the sump plug and got another litre out. I won't be using one regularly for any vehicle I service. Was useful for cleaning out the cartridge filter holder mind :-) Edited March 25, 2017 by Orgasmic Farmer Quote Link to comment Share on other sites More sharing options...
reb78 Posted March 25, 2017 Author Share Posted March 25, 2017 I suppose you could jack the vehicle so the oil gathers on the side of the dipstick tube befor you pump the oil out? Quote Link to comment Share on other sites More sharing options...
Disco-Ron Posted March 25, 2017 Share Posted March 25, 2017 I have one for my smart..... ridiculously slow.... sump plug is a millin times faster! Quote Link to comment Share on other sites More sharing options...
reb78 Posted March 25, 2017 Author Share Posted March 25, 2017 Oh dear. That might be £12.99 wasted today! Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted March 26, 2017 Share Posted March 26, 2017 I'd be concerned about not getting the muck out of the sump. I'd pass personally. Mo Quote Link to comment Share on other sites More sharing options...
missingsid Posted March 26, 2017 Share Posted March 26, 2017 Hmm nice and cheap if you wanna nick fuel! Quote Link to comment Share on other sites More sharing options...
L19MUD Posted March 27, 2017 Share Posted March 27, 2017 I bought a Pela 14 litre one the other day (not cheap at £105!) as the 4.4TDV8 engine on my old mans Range rover does not have a normal sump plug. It has a fitting which points towards the side of the car with a plastic push fit connector on it. If you try and drain it via the sump oil will go everywhere except where you want it! We used the Pela and measured just under 9.5 litres out in 15 mins. I used this time to change the air filters and the cabin filter. Once done we took the push fit connector off and only managed to get an egg cup full of oil out. I also tried it on a 300tdi but struggled to get all the oil out and dropped the sump for the last litre. I guess they work better on some cars than other and it is worth measuring the oil coming out to make sure you have got it all. We will always use it on the TDV8 Range Rovers now just to reduce the mess created! Quote Link to comment Share on other sites More sharing options...
reb78 Posted March 27, 2017 Author Share Posted March 27, 2017 Are modern vehicles designed for these suction pumps? I guess a dip in the sump beneath the dipstick tube to make that the lowest part might make the suction pumps more effective at removing all of the oil than the flat sump on my 200tdi? Quote Link to comment Share on other sites More sharing options...
Davo Posted March 27, 2017 Share Posted March 27, 2017 I suppose that would work if the tube was rigid enough and didn't bend when hitting the bottom of the sump. (I know how that reads but I can't re-word it!) Don't some cars come without a dipstick these days? (Oh I've done it again. Ok, I'll stop now.) Quote Link to comment Share on other sites More sharing options...
L19MUD Posted March 27, 2017 Share Posted March 27, 2017 The 4.4 TDV8 has no dipstick (oil level checked from the dashboard) but in place of the dipstick tube is a tube going to that sump 'plug' fitting. The oil vacuum pump pipe wouldn't even go down it so I used some rubber pipe on the top of that tube and joined it to the pump tube Quote Link to comment Share on other sites More sharing options...
Cornish Rattler Posted March 27, 2017 Share Posted March 27, 2017 Think its a matter of trying it and see as it mite work on some engines and not others so not always the pump that's at fault as sometimes the dip-stick mite not be fitted where the deepest part of the sump is like on older engines, I used one when I was in the FLT game working on older forklifts and I borrowed it to service a mates car and it sucked most of the oil out but not all so had to remove the sump plug Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted March 27, 2017 Share Posted March 27, 2017 I think Rich, at the end of the day, Land Rover put a sump plug in the sump for a reason. If you don't want to lie under the vehicle then talk to Uncle, it's much easier standing underneath ? Mo Quote Link to comment Share on other sites More sharing options...
honitonhobbit Posted March 28, 2017 Share Posted March 28, 2017 When you did the oil change on the TDV8, did you drain both sumps? Quote Link to comment Share on other sites More sharing options...
L19MUD Posted March 28, 2017 Share Posted March 28, 2017 Yes both plugs, which makes this tool even more important as Land Rover in their wisdom located the second one to the back of the engine directly over the subframe! Guess you know that though Quote Link to comment Share on other sites More sharing options...
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