Oil extractor pump: change your filter without a pit or a garage
Oil extractor pumps from 12 euros at Norauto, Carrefour or marine supply stores: changing your oil without a pit costs 35 euros in consumables.
English · Original discussion in Spanish · Published
Changing your oil without a pit: the pump that keeps you out of the garage
Changing your car's oil without a pit, without a lift and without paying for labour is possible. The part that makes it possible is an extractor pump that sucks the oil out through the dipstick tube, and the saving compared to a garage is around 35 euros in consumables per oil change. The problem is not the technique: it is where to buy the device. In big-box stores, parts shops and marine supply outlets it appears at prices ranging from 12 to 20 euros, and there are manual versions that do not rely on the car's battery.
What an oil extractor pump is and how it works
The method involves inserting a thin probe through the dipstick hole down to the bottom of the sump and sucking the used oil into a container. It avoids having to raise the vehicle and remove the undertray, something many drivers cannot do for lack of space or means. The whole job, including the filter change, can be done in about an hour.
The initial outlay is the biggest deterrent. 12-volt pumps that plug into the cigarette lighter cost around 12 euros at auto parts chains, but some people have left them gathering dust in the storeroom because they overheat, take forever and force you to stop every five minutes. Manual ones, from 15 to 20 euros, are sold in marine supply stores and bazaars, and do not depend on the battery. Leroy Merlin has had models for 20 euros.
Where to buy an oil extractor pump in Spain
The short answer: hypermarkets, parts stores and marine supply outlets. Carrefour and Norauto are the names that come up most often, and trade-oriented parts shops also appear on the radar. For those who do not want to leave home, the internet and import stores offer cheaper alternatives than marinas.
There is a middle path that is gaining ground: petrol stations with a pay-per-use extraction machine. Inserting a token costs about 6 euros and the system sucks out the oil in three to five minutes. The problem is that many people do not even know it exists because they never ask. And a warning for those taking it easy: used oil does not go in the bin. It must be taken to a recycling centre, and pouring it down the drain can prove costly.
Does sludge remain in the sump if you extract the oil?
It is the most common objection. Those who defend the drain plug argue that sediment, metal shavings and burnt oil settle at the bottom and only come out by gravity. Those who defend the pump reply that the filter exists for that, and that garage machines also extract. One forum user reports that, after using a garage machine, not a single drop fell when opening the plug and there were no residues at the bottom. With changes every 15,000 kilometres, the sump does not accumulate that much anyway.
The filter is the other front. In some cars it is accessible from above; in others, it is not. And some people point out that filters can be cleaned with an air gun and reused, an idea best taken with a pinch of salt. Filling the new filter with oil before fitting it prevents the engine from running dry for a few seconds.
How much oil to add and how not to overfill
The answer is in the car's manual. As a guide, a 90 hp engine takes about 4 litres, and 1.0 to 1.6 litre engines take around 3.5 litres. The way to get it right: pour in three litres, wait a couple of minutes, check with the dipstick and top up little by little. There is usually one litre between the minimum and maximum marks on the dipstick.
The budget for a full change looks like this: filter for 11.50 euros at a parts store, oil for 23.50 euros at Carrefour, disposable gloves free at the petrol station. Total, 35 euros in consumables. Against that, a garage charges for labour and sometimes sells oil at a premium. The question is how long the pump takes to pay for itself. Not long, if you do one change a year.
The logic is impeccable: if the garage already uses an extractor, the driver can use their own. What is less clear is whether the saving makes up for the time, the oil on your hands and the alucinación to the recycling centre. With these numbers, the shift to DIY should be massive. It remains a minority pursuit.
Changing your car's oil without a pit, without a lift and without paying for labour is possible. The part that makes it possible is an extractor pump that sucks the oil out through the dipstick tube, and the saving compared to a garage is around 35 euros in consumables per oil change. The problem is not the technique: it is where to buy the device. In big-box stores, parts shops and marine supply outlets it appears at prices ranging from 12 to 20 euros, and there are manual versions that do not rely on the car's battery.
What an oil extractor pump is and how it works
The method involves inserting a thin probe through the dipstick hole down to the bottom of the sump and sucking the used oil into a container. It avoids having to raise the vehicle and remove the undertray, something many drivers cannot do for lack of space or means. The whole job, including the filter change, can be done in about an hour.
The initial outlay is the biggest deterrent. 12-volt pumps that plug into the cigarette lighter cost around 12 euros at auto parts chains, but some people have left them gathering dust in the storeroom because they overheat, take forever and force you to stop every five minutes. Manual ones, from 15 to 20 euros, are sold in marine supply stores and bazaars, and do not depend on the battery. Leroy Merlin has had models for 20 euros.
Where to buy an oil extractor pump in Spain
The short answer: hypermarkets, parts stores and marine supply outlets. Carrefour and Norauto are the names that come up most often, and trade-oriented parts shops also appear on the radar. For those who do not want to leave home, the internet and import stores offer cheaper alternatives than marinas.
There is a middle path that is gaining ground: petrol stations with a pay-per-use extraction machine. Inserting a token costs about 6 euros and the system sucks out the oil in three to five minutes. The problem is that many people do not even know it exists because they never ask. And a warning for those taking it easy: used oil does not go in the bin. It must be taken to a recycling centre, and pouring it down the drain can prove costly.
Does sludge remain in the sump if you extract the oil?
It is the most common objection. Those who defend the drain plug argue that sediment, metal shavings and burnt oil settle at the bottom and only come out by gravity. Those who defend the pump reply that the filter exists for that, and that garage machines also extract. One forum user reports that, after using a garage machine, not a single drop fell when opening the plug and there were no residues at the bottom. With changes every 15,000 kilometres, the sump does not accumulate that much anyway.
The filter is the other front. In some cars it is accessible from above; in others, it is not. And some people point out that filters can be cleaned with an air gun and reused, an idea best taken with a pinch of salt. Filling the new filter with oil before fitting it prevents the engine from running dry for a few seconds.
How much oil to add and how not to overfill
The answer is in the car's manual. As a guide, a 90 hp engine takes about 4 litres, and 1.0 to 1.6 litre engines take around 3.5 litres. The way to get it right: pour in three litres, wait a couple of minutes, check with the dipstick and top up little by little. There is usually one litre between the minimum and maximum marks on the dipstick.
The budget for a full change looks like this: filter for 11.50 euros at a parts store, oil for 23.50 euros at Carrefour, disposable gloves free at the petrol station. Total, 35 euros in consumables. Against that, a garage charges for labour and sometimes sells oil at a premium. The question is how long the pump takes to pay for itself. Not long, if you do one change a year.
The logic is impeccable: if the garage already uses an extractor, the driver can use their own. What is less clear is whether the saving makes up for the time, the oil on your hands and the alucinación to the recycling centre. With these numbers, the shift to DIY should be massive. It remains a minority pursuit.
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Summary of a discussion on Burbuja.info - Foro de economía, actualidad y política., translated from Spanish and reviewed before publication. Read the full discussion (63 replies).
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