Questions tagged [oil]

This tag should be used for anything related to the use of automotive engine oil, or in reference to other parts of the car that also require lubrication using oil.

Filter by
Sorted by
Tagged with
6
votes
1answer
456 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
1answer
442 views

I have engine oil in my coolant. What might be the reason?

I have purchased a pre-owned car. After the purchase I saw there was engine oil in the coolant reservoir and also the coolant level is going down slightly. Engine is not heating up. What do I do? ...
11
votes
1answer
31k views

Does synthetic oil expire?

I just bought a bottle of Castrol Edge oil for topping up. The oil is advertised as being 'Fully synthetic', I don't really know what that means but it was produced sometime in 2012. That seems like ...
5
votes
1answer
1k 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 ...
6
votes
4answers
4k views

High oil warning in Mercedes B class diesel

I have a Mercedes B class diesel 2010. I have had it since August 2015 from a dealer who serviced it, and everything is running fine. I have noticed a warning saying drop oil level, so I measured the ...
5
votes
1answer
3k views

Civic R18A2 oil consumption

Looks like my Civic burned or lost 2L of oil in the past 6 months, I think that is excessive. At previous oil change garage mechanics advised me to use 5w30 viscosity oil because 0w30 is too thin. I ...
1
vote
0answers
141 views

Low water pressure and oil pressure at the same time [closed]

I have a 98 Camaro and I would like to know what's going on with my car. It is currently experiencing of loss of water pressure and oil pressure at the same time, and then it starts knocking as if its ...
4
votes
2answers
447 views

Oil in my coolant & no longer in my oil pan?

I have a 96 mustang GT with a 4.6 ltr V8, the car has not been severely overheated, but did overheat once a few months prior to this issue when the heater hose fitting popped out of the Carbon Fiber (...
1
vote
1answer
16k views

OIL ON MY ALTERNATOR

My 1996 XH Ford GLI LONREACH UTE with a 4.0 Tickford motor 5 sp man, had a oil leak (oil leak fixed! and I was quite proud of myself) from the rocker cover gasket, resulting in enough oil that would ...
8
votes
7answers
2k views

Do air filters purify air better with age?

I have been reading in a few places that air filters get better with age, is this true? And how much better? Would it have any effect on quality of the oil or make oil dirty faster? Or is there ...
2
votes
1answer
582 views

2006 Ford Fusion - High Oil Consumption

My 2006 Ford Fusion (4 cylinder, manual transmission) is using a lot of oil. 1 qt every 300 miles. No smoke, no oil spots under the car on the garage floor. Where could the oil be going?
14
votes
2answers
3k views

How do I troubleshoot the source of oil in my coolant?

I would like to know the step by step troubleshooting procedure for discovering the source of oil appearing in coolant. There are several different points of failure that can be the root cause for ...
6
votes
1answer
1k views

Oil leakage or normal engine procedures

It was raining yesterday and I noticed the typical rainbow colouring of some of the water around my car. Couldn't tell there and then if it was a car body fluid leak or just the water going trough the ...
3
votes
1answer
393 views

Running thick oil in a small engine

Recently, my sled ran out of oil (it started to leak) and it locked up. I managed to get it started again, but barely. I had no thin oil and I had to use some 10w40 heavy oil. I didn't put in too much ...
3
votes
1answer
665 views

Effects of loss of oil pressure after oil change [closed]

I'm curious some people say change oil every 3k miles, 6k, 10k and some even every 20k. What seams best for the engine and give the best protection would be the shortest interval 3k however I ...
10
votes
3answers
101k 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? ...
1
vote
2answers
2k views

Overfilling the oil level [duplicate]

I recently had my oil changed on my 2004 Buick Century. Does overfilling the oil level harm the engine?
2
votes
1answer
7k views

What oil should I use for Hyundai Sonata 2004?

What oil should I use for this car? How do I know when I should change the oil for my car?
6
votes
1answer
115 views

What exactly is meant by the phrase “plugging in your engine”?

I have found a relevant quote from here that might be related: Plugged-in engines are already half-warmed when started. Fuel consumption is thus reduced by an average of 15 per cent over the first ...
17
votes
8answers
23k views

Will having a radiator full of engine oil do damage to the motor?

I've got one question; I was looking over this car that I was going to buy and there was engine oil in the radiator. I asked the guys why it was in there and he said he didn't have enough coolant to ...
12
votes
5answers
50k views

Does Vaseline dissolve rubber?

Recently, someone suggested that I apply some vaseline to an O-ring connection to see if I can find a leak. I've read that oil-based lubricants, especially vaseline, can desolve rubber. It seems like ...
4
votes
1answer
51 views

Toyota corolla verso 1.794 petrol vvt-1-t2 [closed]

Recently Purchased Vehicle @milage 81.075 in the past vehicle has consumed 5.25 Litres of oil a full oil composition test was carried by my Garage. They also advise it is an uneconomical repair it has ...
21
votes
4answers
4k views

What are the benefits of a dry sump?

I've heard references to dry sumps, usually in reference to racing engines. But more recently I came across an article about a 'supercar' which stated that it had a dry sump. What are the benefits of ...
5
votes
2answers
2k views

Are there any vehicle engines that don't have a mechanical oil pump?

I my answer to How to move car a small distance without tow dolly I suggested putting a manual transmission vehicle in 3rd gear while towing with a rope or strap to apply back pressure and help keep ...
7
votes
3answers
26k views

What are all the different types of fluid in a car and a short summary of their use?

A fluid is defined as anything that flows, hence for our purposes a gas or a liquid. I know that there is fuel, engine oil, engine coolant and brake fluid. Also air is normally taken in through a ...
7
votes
1answer
119 views

Additives in Engine Oil

As oil is used in an engine, it ages, creating oligomers. Is there a way that we can separate these oligomers without affecting the additives in the oil???
5
votes
1answer
4k views

Engine consuming oil and white smoke comes out when starting the engine while cold

my car has been consuming oil for a while now but only recently has started to smoke when it is started while the engine is cold. I thought that maybe because I am using a synthetic oil in a high ...
26
votes
4answers
495k 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 ...
7
votes
2answers
1k views

What exactly is meant by “engine coolant”?

I know that engine coolant is a fluid in the engine used to dissipate heat spots and keep the engine cool in general as the moving parts generate heat. In this context, I would call the oil an "engine ...
6
votes
2answers
7k views

How exactly does an increase in engine temperature cause a car to breakdown?

I have an engine temperature gauge on the dashboard of my car (as most people do), but if for some reason the engine temperature is caused to increase (due to a lack of cooling or what have you), the ...
64
votes
9answers
779k 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 ...
3
votes
0answers
76 views

1998 Plymouth Voyager

The oil pressure cluster light is coming on and the chime sound as well,the oil level seems fine. Wondering what the problem may be? The 1998 voyager has 138,000 miles and next oil change is not due ...
9
votes
4answers
26k 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 ...
3
votes
1answer
2k views

Does E85 fuel increase oil consumption?

I have a 2003 Opel Meriva which I run on 50% gas / 50% E85. According to my own experience and Meriva forums, this is about as much ethanol as the engine can take without tripping the engine ...
1
vote
1answer
523 views

Do additives within oil separate?

Draining excess oil tomorrow and wondering after leaving the car overnight will any additives within the oil separate sinking to the bottom of the sump? If so how long of a drive should I take it ...
4
votes
2answers
14k views

Oil overfill problem/oil foaming

Changed my oil today but like a fool overfilled when topping up, I did not notice this at first as I have a strange dipstick and fresh oil is pretty difficult to spot however I overfilled by around ...
3
votes
0answers
642 views

Hyundai Santa Fe - Engine Oil Pressure Valve

Does anyone know where a 2007 Hyundai Santa Fe CRDI Engine Oil Pressure Valve is?
3
votes
5answers
14k views

2001 VW Jetta 1.8T oil light on, but oil level is full

Basically the situation is as described in the title, the oil light comes on intermittently, but when I check the oil it appears full. What could be causing this?
2
votes
3answers
964 views

Oil pressure and fuel pressure formula

Can someone give me a formula to calculate Oil and Fuel pressure of a car engine? Consider a small passenger car. I have information like Total distance travelled, speed, rpm, MAF, MAP, Intake Air ...
6
votes
1answer
7k views

Car leaks oil when driving, Oil from exhaust pipe

Car leaks oil when driving not while parked. The bottom of the vehicle is covered with oil and there's white smoke coming from tail pipe when driving. It sat and there no oil puddle in garage but ...
5
votes
1answer
744 views

oil level on dipstick

Which way should this dipstick be placed? When placed in with the bend facing towards the engine it gives a different reading from when placed facing the opposite way. There is not a great deal of ...
4
votes
1answer
812 views

What are the effects of excessive oil changes on an oil pump? (read description)

I would like to know what the effects on an oil pump are when oil is changed. Obviously after changing the oil filter the engine will run dry without oil pressure for the first few seconds while oil ...
6
votes
3answers
2k 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 ...
3
votes
1answer
9k views

Jiffy lube put too much oil in my car [duplicate]

I had an oil change at jiffy lube at 10,000 miles. I have just gone to another jiffy lube and was told that the oil is one inch too high. I have not added any oil. I have driven in normal conditions ...
1
vote
2answers
3k views

I almost stalled and my oil light came on

I was driving along this evening and lifted the clutch too quickly by mistake. I have hardly ever done this (about twice a year) However, this time the engine revs dropped to about 100-200rpm, and ...
6
votes
3answers
2k views

Can I use Turbo Diesel oil in my Petrol car?

I need to top up the oil in my 2003 Opel Agila with some 5W-40 oil. However, the only oil that I have are: Mobil 1 Turbo Diesel 5w-40 Halfords Ford Oil 5w-40 However, I have a Vauxhall/Opel Agila 1....
7
votes
4answers
5k views

2002 Ford F350 Superduty 7.3L Turbo diesel using a quart of oil every 43 miles

This Diesel engine has been rebuilt and it didn't use any oil till the HPOP went out. I replaced the oil pump and then I noticed my turbo when going up a hill and the Turbo would sound like a sneeze ...
2
votes
1answer
125 views

How can I empirically evaluate the condition of my used motor oil at home?

I changed my oil recently, and my careful scientific observation led me to discover that it was black and a bit runny. Not clear golden like new oil, but neither tarry sludge like a haven't-serviced-...
4
votes
0answers
237 views

Running in oil a for light diesel engine (Japanese, Toyota 3L)?

What would you use as a running in (break-in) oil for this engine? I have this engine, and it has just been reconditioned, new pistons, conrods, crank and bearings.
2
votes
3answers
1k views

Oil on radiator cap what could be the cause for that?

I have recently discovered that there is oil on the radiator cap. I am driving a Toyota corolla with 4A engine which is automatic. What could be the cause for that?

1
8 9
10
11 12
14