Often the first job for an amateur mechanic. Questions regarding changing the engine lubricant oil, or problems resulting from doing so.

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34
votes
9answers
81k views

What actually happens when there is not enough oil in a car engine?

When a car is topped up with oil, it clear to most people that you are supposed to fill it to the recommended amount as specified by the manufacturer (normally on a dip stick). What exactly are all ...
28
votes
4answers
56k views

How far can I drive with 1 gallon too much oil?

I have way too much oil in my Acura TSX. Do I need to take care of it without turning it on or can I drive it to a service station? If I need to do it in place, I don't have the ramps or a pan or ...
20
votes
11answers
58k views

How can you tell the oil needs to be changed?

I know oil should be changed every 3000 or 6000 miles (depending on the car and conditions) but I'm not all that great at keeping track and I've let the car go for 10,000 miles before and it still ...
17
votes
5answers
2k views

What happens if I change the oil when the engine is cold?

I have always changed the oil in my vehicles with the engine hot, because the manuals always say to let the engine reach normal operating temperature first. Oil change instructions all over the ...
13
votes
7answers
19k views

Engine oil change and getting rid of old oil completely

After running the vehicle for a certain distance usually we will change the engine oil. This will not only give engine new life with the brand new oil but will also get sludge and other sediments out ...
12
votes
3answers
9k views

How do I select the right oil for my car?

I can give you my cars make and model and the conditions that I drive in, but I'm looking for a general guide to selecting the right oil for a car. I'm not really knowledgable when it comes to cars so ...
12
votes
4answers
4k views

What actually happens when there is way too much oil in a car engine?

I saw the answers to a question I posted recently highlighting the disadvantages of having too little oil in an engine, but that got me wondering what if the complete opposite were to occur! I know ...
9
votes
4answers
4k views

What happens if unsuitable oil is used in a vehicle engine?

I recently heard an urban legend-like story about a guy in a developing country who decided engine oil was too expensive and so used some vegetable oil instead. The story says the car ran for some ...
9
votes
6answers
30k views

Is it normal for the oil to be dark in color right after an “oil change” in a 10-year old diesel car?

I took my 2002 Jetta TDI wagon to a neighborhood shop about 10 miles, 24 hours ago. They supposedly changed the oil, but the color is very dark, almost black. Definitely not light-colored/transparent. ...
9
votes
2answers
4k views

Is it safe to reuse oil that was drained for a repair?

Let's say that I just replaced my engine oil but decided I want to lift the valve covers to do some gasket replacement. I know it may sound cheap but I'd rather not throw away $25 worth of almost new ...
9
votes
5answers
180 views

What can I do with used motor oil?

Besides recycling? I've heard, for example, that I can use it to lubricate the drive chain (in a motorcycle / bicycle), but that doesn't appeal to me.
8
votes
2answers
13k views

Is topping up the oil enough of an oil change?

If you use synthetic ester-based oil in a relatively new petrol engine, top it up regularly, and the engine runs very quietly and basically without any noise whatsoever (especially after another top ...
8
votes
1answer
1k views

Do newer cars actually monitor the quality of oil? [duplicate]

Possible Duplicate: How does the change oil light system work and does it matter what type of oil you use for it to work properly? Starting last August, I am currently leasing a BMW 328i coupe....
8
votes
6answers
28k views

Stubborn oil drain plug caused by hot oil?

I'm trying to change the engine oil but running into difficulties removing the oil drain plug. One of the instructions I followed to change the engine oil was to give the car a short drive prior to ...
8
votes
1answer
965 views

A lot of smoke coming from exhaust after oil change (mixed old with new oil)

I put new oil in my nissan earlier today (5w-30) and as I was driving I started to smell what I thought was burning oil, and I noticed behind me excessive amount of smoke while driving. I went from ...
8
votes
3answers
60 views

What is the proper course of action after over-filling oil during an oil change?

Managed a very stupid mistake: changed the oil on my just-purchased '03 Kia Diesel Pregio on uneven ground. The drain plug on it is on the side of the pan, exacerbating the mistake. Initially drained ...
7
votes
3answers
13k views

How to understand different engine oils?

When I went to shop for engine oil, I found many types as such: 5W-30 A5 5W-30 A1 5W-20 SAE 5W-30 10W-30 Also I see other information such as: Fully Synthetic Semi Synthetic Oil Synthetic ...
7
votes
6answers
9k views

Oil change with front wheels on ramps?

From the obsessive compulsive department: I've been changing my own oil by driving up on a pair of ramps, draining and filling. Based on a slight overfill condition after adding the specified amount ...
7
votes
6answers
2k views

Tips for an oil change at home: cleanliness and disposal?

Drain oil, add new oil... find oil everywhere. It spills, the funnel is full of it when I'm done and drips forever, and I'm pouring kitty litter all over the driveway. If I had a proper garage this ...
7
votes
3answers
576 views

Okay to add new oil to old?

Title pretty much explains, I change my oil every 4-6k miles depending on how generous I’m feeling, however will the oil dirty oil that’s already in the sump mix with the clean oil when topping up? ...
7
votes
3answers
6k views

Is it normal for a car's first oil change to be sooner than the regular interval?

Related: When should I change the oil, as the tech recommends or as my oil change light indicates Do newer cars actually monitor the quality of oil? How does the change oil light system work and ...
7
votes
2answers
1k views

Do I need to go to a dealer for a simple maintenance?

I just bought a 2012 CRV. Now, it's time for an oil change. I already moved so the dealer is too far away from my house (may need half day off) and there is no other public transportation to go there. ...
7
votes
3answers
149 views

Excessively over filled motor oil. Ran for a few seconds until smoke came out. Now my car won't start

So last night me and a friend changed the oil on my 2005 Chevy aveo. The only problem was that what we were draining was the transmission fluid and long story short we ended up adding about 6 litres ...
6
votes
3answers
406 views

Did the mechanic damage our car?

I purchased a 125k mile 2005 Toyota Camry in good condition and with a good service history about 5 months ago. It was due for its second oil change since we've owned it so my wife took it in to a ...
6
votes
3answers
394 views

Car stored for 6 months shows low oil level after 300 miles

Just bought a car from a BMW dealer and the guy told me it was sitting for almost 6 months before I came to purchase it. When I left the dealership the oil was above the min mark showing green. Drove ...
6
votes
2answers
56 views

Oil Change Steps? (check my list) 2014 Impreza

Decided to spend time w/my newly-met dad and do an oil change together on my 2014 Impreza Sport. I told him i want to do the work, myself, with his support. I'm fairly confident and have watched some ...
6
votes
2answers
164 views

Can engine oil type cause a car to overheat?

I own a Peugeot 405. At first I was using 20w-50 engine oils but The last time I went for changing the engine oil I used 10w-40. After that The engine temperature rises constantly and (even when it's ...
6
votes
9answers
34k views

How often do I need to change my oil in a VW TDI?

The manual for my 2003 VW TDI says to change the oil every 12 months or 10,000 miles. My dealer says every 6 months or 5,000 miles. Are they just trying to make twice as much money off my oil ...
6
votes
1answer
407 views

When should I change the oil, as the tech recommends or as my oil change light indicates

I have a Toyota Corolla 2008. It has an oil change light indicator. The tech at the one hour oil change place recommends to change it every 3,000 miles but the indicator light only goes off about ...
6
votes
1answer
107 views

In Canada, would doing my own oil change void the warranty?

I'm looking to see if someone can confirm that changing the oil on my car will not void the warranty (I'm in Canada). Links for proof would be nice or get an idea where to look for such things. This ...
6
votes
0answers
82 views

Found small debris in used oil

After I changed the oil on a 2007 Toyota Camry I found debris in the bottom of the used oil container. I used a magnet to test and found the debris to be non-metal. Considering the car age is this ...
5
votes
3answers
4k views

Ford Taurus common oil leak area?

On my last oil change, the technician noted some oil around top and side of the engine block and said there is a small leak. The only way to find where it is coming from is doing the whole dye test, ...
5
votes
1answer
56 views

How do hybrid's with all-electric mode typically handle oil changes?

So, I'm researching getting a Ford C-Max Energi. It fits well with my commute range (approximately 20 miles a day). I understand that after the battery is depleted, a conventional motor kicks on and ...
5
votes
2answers
978 views

Is it important that the gasket on the dipstick make a seal against the dipstick tube?

I just did an oil change on my 1995 Nissan Altima, and noticed that the gasket on my dipstick does not make a seal inside the dipstick tube. The inside diameter of the tube is maybe 3/32 of an inch ...
5
votes
4answers
5k views

How could an oil drain plug fall out after 36 days and 2500 miles?

We had an oil change done at a quick lube type shop. After 36 days and 2500 miles driven, the oil drain plug fell out, resulting in severe engine damage. There was no oil leakage or any sign of ...
5
votes
3answers
16k views

Which provides better engine flushing, traditional flushing oil or adding a flush additive to old oil?

Background I think that my vehicle would probably benefit from having it's lubrication system being flushed out at it's next oil change. Checking prices of flushing oil at local suppliers I noticed ...
5
votes
3answers
148 views

Why does my garage insist on using an engine flush when changing the oil?

My car handbook lists what should be done at each service, and it does not say “engine flush” should be used. The main dealers don’t use it. Yet most small garages seem to insist on using it at ...
5
votes
3answers
569 views

When should I get an oil change if I drive infrequently?

I drive a 1997 Honda Accord maybe 6,000 miles each year. In past years, I've driven about 12,000 miles per year and changed the oil about every 3,000-4,000 miles, or about every three months. When ...
5
votes
3answers
1k views

How much oil will this fluid extractor extract?

The Griots Garage multi-fluid extractor is an example of a tool that certainly seems amazingly useful and convenient. If you haven't seen it before, the concept is that a semi rigid tube is inserted ...
5
votes
2answers
584 views

How to clean engine when oil is contaminated with metal shards?

During a recent oil change Istripped the oil pan bolt. It took a bit of trial and error for me to realize the stripped hole was a 14mm 1.25 thread so I got a tap and rethread it to 14mm 1.5 thread ...
5
votes
2answers
2k views

What causes too much fuel for my Briggs and Stratton engine?

I recently bought a generator that uses a Briggs and Stratton 17hp Vanguard engine. Before purchasing the generator, it had not ran in several years. The fuel was stale and the oil needed to be ...
5
votes
1answer
98 views

Audi A3 2001 1.9 TDI ASV - which motor oil to use?

Which oil I should use? I have no reference guide in which I could tell what kind of oil to use. I live in Slovenia where lowest temperature is around -15°C and the highest at around 40°C. The thing I ...
5
votes
1answer
200 views

I used 0W-30 instead of 0W-20. Is it serious?

I have a Nissan Sentra 2014. I wanted to start using full synthetic oil, and the manual said I should use 0W-20. I changed both the oil and the filter (I used this one), and after finishing I realized ...
5
votes
1answer
6k views

Oil leak - just keep refilling?

I have a 1995 Honda Accord with over 170k miles on it. I have the oil changed regularly every 3000 miles. My mechanic noticed the oil levels were pretty low at each oil change and took a deeper look. ...
5
votes
1answer
45 views

Are mutliple oil and filter changes necessary to 'clean' an engine?

I was having low oil pressure issues on my 2007 VW Jetta. The oil pump filter was dirty because the previous owner didn't did the minimum oil changes. I took it to a mechanic and he did an oil ...
5
votes
2answers
88 views

2005 Honda CBF 600 — clutch plates get stuck overnight

I bought a 2005 Honda CBF 600S, rode it for about a week, and then asked my mechanic to check if everything is OK, and to replace the clutch cable. The mechanic also replaced all the fluids, ...
5
votes
2answers
741 views

Synthetic Oil and oil change frequency

My car (a 2008 Scion tC) says to have its oil changed every 5K miles or 5 months. I just took a new job and commute into the city by bus so I'm driving a whole lot less. I was told that if I got full ...
4
votes
5answers
465 views

Is it possible to drain oil pan without getting any oil on your fingers?

This may be a frivolous question or a brain teaser... But I've always wondered if it is possible to so skillfully remove the drain bolt from the bottom of an oil pan upon oil change as to not get any ...
4
votes
4answers
84k views

Is it OK to drive Accord with 5% oil life left as indicated?

The 2010 Accord indicates that only 15% oil life is left. Oil level seems to be OK. The driver would rather complete the trip, which is 1400 more miles. At the beginning of the trip there were 20% oil,...
4
votes
4answers
12k views

Replacing oil sump plug washer after every oil change

As the title says, does the oil sump plug washer need to be replaced after every oil change, or can they be reused? Background - my 2005 Daihatsu Copen needs an oil change every 3000 miles. I have ...