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.

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14k views

What engine oil should you not mix together?

Can you mix 0w-40 and 30w oil together and get something like 15w oil? How would that math work? When is it a problem to mix to different types of oil together other than oil weight?
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1answer
1k views

Oil filter: anti drain back valve (aftermarket) vs no anti drain back valve (OEM)

I'm about to have an oil & oil filter change on my car. I've bought both the oil (a vollsynthetisch 5W-40 from a German firm) and the oil filter (the OEM genuine part, made in Germany too). Out ...
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1answer
864 views

Milky Motorcycle Engine Oil

Good day, I recently replaced the engine oil and it was milky. Water mixed with the oil. Is there any sense in the following process? Drain all the milky oil. Fill the engine with WD-40. Spin the ...
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1answer
1k views

The right viscosity oil but does not meet required ACEA C3, how bad is it?

I had my oil replaced and they put in Mobil Super 3000 5W-40. The manual says "with Multi Air systems using lubricants with features lower than ACEA C3 and SAE grade other than 5W-40 could cause ...
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1answer
34 views

can I use a heavier oil in front forks

I have a 1982 Honda gl500 silverwing and last year I had the front fork seals replaced. They lasted about a month and the left one started leaking again. Now the local repair shops tell me that 1. ...
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1answer
270 views

VW oil cooler was leaking

my 2003 vw tdi oil cooler was leaking oil,i had the O ring replaced and after a week,it started to leak again.The mechanic said nothing more could be done,but now it has stopped leaking completely??? ...
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2answers
2k views

Why was oil level high?

Civic vti em1 I was checking my oil level and it kept showing below minimum, empty or just at minimum. At one point I added a quarter of a litre and the oil level when a a third above the minimum ...
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1answer
130 views

How manufacturers recommend a certain oil viscosity

I recently bought a 220 cc motorcycle.Manufacturer recommends 20W50 engine oil.I have seen owners manual of 250 cc motorcycle by another manufacturer where recommended oil viscosity is 10W30.I want to ...
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8answers
40k views

Is it alright to top off with oil instead of changing after 3000 miles?

is it ok to top off or change the oil after 3000 miles? My husband said that I was 2 quarts. low so he added two quarts. My question is should we have just changed the oil completely or just added ...
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3answers
2k views

Can you estimate engine condition based on how quickly the oil turns black?

I checked the oil level on my car that had oil changed 2000 km ago (the car doesn't seem to consume any oil, so I don't check it every 1000 km). The oil color was in an intermediate state between new ...
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1answer
861 views

ESP/ASR fault and no power on my Peugeot Expert 2015 2.0 Diesel

My car accelerated very much (kind of like pressing the clutch while accelerating) with a ton of white smoke coming from the exhaust, then it lost power, and the triangle and ESP lights showed on the ...
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2answers
640 views

Oil in combustion chamber

I received a power generator with oil in the combustion chamber. Apparently the gen was tipped over, so I suspect oil travelled through the valve? and into the chamber and carburetor. Can I still run ...
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2answers
47k views

How to add compressor oil to an AC system that's already charged?

I recently fixed a leak in my car's AC system. Before I charged the system with fresh refrigerant after a complete evacuation, I almost forgot to add some PAG oil to the system. Which leads me to my ...
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1answer
90 views

Engine started to consume oil

My engine used to leak due to seal fail 6 months ago. it was a problem caused by over level oil. Now all leaks are fixed but there is still a gradual oil consumption over mileage. For the last 3 ...
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3answers
79 views

Can you mix black oil caued by poor air fuel ration with new oi?

Every time I used to drain and add oil it would quickly turn black. That was most probably because i've been driving with a faulty o2 sensor and apparently the air fuel ration due to this is one ...
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2answers
764 views

Can I wash my oil pan with soap and water?

I took my oil pan off of my 96 Honda Accord 25th anniversary sedan, and I washed it with dish soap and water. I'm pretty sure I washed all the soap off. Should I worry?
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1answer
83 views

Which engine oil is my manual telling me to use?

I have attached a pic from my vehicle manual which shows the engine oil I need to use. It lists the different models the car comes in e.g. 1.6, 2.0, 2.7. At I have a 2.0. At first I thought ...
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3answers
3k views

Can running with incorrect air fuel ratio cause engine oil to go black?

I think I read that if say you had faulty o2 sensors this might cause an incorrect air fuel ration which in turn could be one reason an engine oil becomes black. Is this correct?
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1answer
871 views

BMW E90 318d oil leak

I've recently replaced my splash shield and I found some oil spots on the oil pan. I've tried to look for the highest point where I could find leaked oil and it seemed to be near the oil filter ...
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1answer
95 views

Can low oil trigger the CEL?

I have a 2007 Chevrolet Impala V6 Flex-Fuel. Recently, the Check Engine Light came on. I decided to drive the car with the light on for a few days as my engine code reader was packed away. About four ...
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20 views

Understanding Oil Certifications

I am trying to figure out what certification VW's Certs translate into as API, if that's even possible? Looking for oil for a '08 2.0T Passat, and it looks like it's calling for VW 502 cert. Some ...
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2answers
2k views

Can I use 15w40 synthetic engine oil in my 2015 vw tdi and how long can you go between oil changes?

Can I use 15w40 synthetic oil in my 2015 vw jetta tdi and how long can go between oil changes?
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Weird high pitch grinding noise coming from car when starting/moving?

I have a 2013 Honda Accord and had this weird high pitched grinding noise coming from the front. It is much more at cold starts and makes this noise regardless whether I am stopped, moving or braking. ...
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1answer
2k views

Is synthetic oil more harmful than conventional?

To humans, not the engine, obviously. I use conventional oil (5w30) for my truck. When changing the oil, I obviously wear gloves, but inevitably end up getting some on my hands. It never seems like a ...
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1answer
27k views

Is it safe to use JASO MA2 motorcycle oil if owner's manual recommends JASO MA?

All motorcycle oils available in my area are labeled with JASO MA2, but my motorcycle's manual recommends JASO MA. Is it safe to use JASO MA2 on JASO MA recommended motorcycle?
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2answers
3k views

Why Engine oil Leak at bottom of Hero Passion Plus Bike engine?

(Initially i didn't know about the oil limit in passion plus) I accidentally filled 2 Litre engine oil in my Hero Passion Plus Motorcycle, which is more than specified limit (1 Litre). With that ...
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0answers
17 views

2002 mazda tribute rebuilt engine and new oil cooler doesn't fit right

I recently bought a totally remanufactured engine, and to stay within warranty, they make you buy a new oil cooler. I bought an after market one, and it doesn't fit right. The rubber rings have been ...
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1answer
352 views

My 2008 Honda Fit can't use synthetic oil

I have a 2008 Honda Fit and in the manual says "Honda doesn't recommend using synthetic oil". I want to know why, as I can't find the answer online. Seems like any car can use synthetic, why mine ...
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1answer
22k views

What is compressor oil rating PAG ND-8 equivalent to?

The Land Rover LR3 service manual specifies: Compressor oil : Denso ND-8 PAG oil I'm scratching my head trying to figure out whether the following oil, which seems equivalent to ISO VG 32 would do ...
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1answer
3k views

2007 Jeep Wrangler HOT OIL! STRANDED! HELP!

2007 Jeep Wrangler. Hot oil light came on, pulled over at a store, killed it, added some oil after it cooled about 15 minutes now it doesn’t want to start again thought about adding some coolant but ...
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0answers
96 views

vw polo 6n2 oil level decreasing

i have a Volkswagen polo 1.4 engine i have two problem first in oil level, the oil level is decreasing every few days and there is no oil leak or no smoke going out from the exhaust, and second ...
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1answer
720 views

Has my mechanic overfilled the oil? Audi a3 2008 1.8 TFSI

I have recently bought an Audi a3 2008 TFSI, and had a mechanic checking the engine over before buying it. He had to repair an oil leak and refilled the oil, everything seemed good to him. Today when ...
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3answers
9k views

2012 Subaru Forester: “cam case, and front cover are leaking oil”

2012 Subaru Forester, automatic, a tad under 115000 miles. Took it into the dealer for regular service and received a write-up "requiring immediate attention" that the "cam case, and front cover are ...
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1answer
919 views

2013 BMW electronic oil level check fails to complete

My wife's car is a 2013 BMW 335i with M-Sport package. The engine has no dipstick so the only way to check the oil level is using the menu-driven display. However, this never completes. ...
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4answers
34k views

Car won't pickup speed, only goes about 30 MPH. Why?

I have a 95 Lincoln Town Car Signature. For less then the past week my car hasn't been wanting to pick up the speed like it should. After going to see about a diagnostic test done, they want so much ...
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1answer
1k views

Shelf life of sealed and unsealed oil left in trunk?

I always keep a quart or two of oil in my trunk for "just in case" purposes. Currently, I have one sealed quart and one unsealed, half-used quart. Both Castrol 0w30 full synthetic. I bought them ...
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2answers
305 views

2014 Jeep SRT 6.4L oil filter was too small - what kind of damage?

What possible damage could my engine incur from having an oil filter installed that is smaller than the suggested size? I have damage but I’m interested to hear what this forum has to say about it ...
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1answer
5k views

Does the car's angle matter while trying to read the oil dipstick?

Just wondering, Would a reading of the oil dipstick be inaccurate if the cars' angle is off? This could be to either sides. For example: Parked with the right wheels on the sidewalk. Right side ...
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0answers
299 views

I used sae 30 instead of 5w30

I put two quartz of sae 30 and now I'm having problems with changing gears they take longer. What can I do to take it all out and put the right oil. If you can please help me thank you.
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59 views

Does an engine with lower viscosity oil require less warming up?

I have always seen that an engine should be driven gently (low throttle, low revs) for about 15 minutes after starting, in order to bring the oil up to temperature and lubricate the engine properly. ...
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2answers
486 views

2011 Cruze LT Turbo - oil pan plug falls out

2011 Cruze LT Turbo - well maintained - last oil change Dec 2017 at local dealers - only place car maintained and all oil changes there. On hwy and large warning sign and audible - stop car and ...
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0answers
105 views

Scooter 49cc trouble starting at morning

I was wondering why my scooter (Aprilia 49cc) is having trouble with starting at morning, To make this easy to understand : - I only have one shot with start bottom, first attempt, my scooter start, ...
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0answers
103 views

What is the best oil grade for my engine condition?

I have a mid-aged 300k 3.6L car. I bought it 3 years ago and was using 20w50 oil (I live in Saudi Arabia where tempartures reaches 50c in summer and below 10c in winter) The 20w50 was so heavy on my ...
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1answer
5k views

Oiled vs Oil-less turbos

So the question I have is are there any major benefits to the oil-less turbo technology that exists today? What makes a turbo like this better from a traditional oiled turbo? (Not specific to any car ...
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1answer
399 views

engine consuming oil and performance?

Can a car engine begin to burn oil with no noticeable performance or fuel consumption difference / or noticeable white smoke out from the exhaust? Assuming it loses about 800-900 ml per 1000 km. I ...
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1answer
555 views

Why does my car have very poor acceleration?

I have a 2009 Peugeot with the 308 cc THP engine. The car has poor acceleration. Here are the codes: P2191 P2261 P2262 P0243 P0299 What do these mean?
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1answer
100 views

What is the difference between old engine oil and old gasoline and how it affects a car

This happened in the mid 1990s and something made me think of it right now. A family friend ran out of gas 3 blocks from his house. I think he was driving an early 1970s car (if that matters). He ...
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3answers
5k views

Low compression on all cylinders - Flooded Engine - Maybe Washed Cylinders?

I just did a head gasket replacement on my 1995 Acura Legend. Before the replacement, compression was good on all cylinders except #3, which had blown. While the engine was open: I cleaned off the ...
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2answers
5k views

Very low oil level symptoms Ford Ranger

This seemed weird to me. My daughter called and said her boyfriend's Ford Ranger was "vibrating and misfiring" and when they checked the engine oil level was very low (off the dipstick), and could I ...
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1answer
3k views

Overfilled oil by 1 quart in a Chevy Spark [duplicate]

I have about a quart/liter of extra oil in a 2016 Chevy Spark. Will it be OK to drive it? I don’t want to damage the engine. I’ve read so far that 1 quart isn’t much but for such a small car I’m ...

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