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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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1answer
4k views

Is engine flush safe and should I do it?

Garage put some oil in car and after I checked the dipstick it looked black and thick. Car has since been running sluggish and the cause might be the oil(though this work followed an overheating ...
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2answers
322 views

Can you put food coloring in your engine oil? [closed]

I am wondering if I could put some blue or pink coloring in some engine oil. We have a 95 Toyota Estima (Leeward) that has a bit of an abandonment disorder. To be fair, we are his 3rd set of parents ...
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1answer
2k views

Adding A/C Compressor oil

I had a new ac compressor put on my 04 Mitsu Endeavor. At that time I didn't know oil had to be put in the compressor but had them put it on anyway. It's not been used since but I want to start ...
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1answer
81 views

Can Engine Lugging cause Piston Ring wear?

I just had my oil analyzed from my 2007 335i highly tuned car. I am using the Motul 300v 5w40 and everything seems really good, except for Chromium and Molybdenum. Before this, every value was fine ...
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2answers
439 views

Why does dipstick show darker at bottom to lighter at top?

I notice when checking the dipstick sometimes it is black or brown at bottom and gets lighter at top. Why is this?
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1answer
50 views

fuel damaged body panel, how to repair?

Was in the process of filling up with fuel until I forgot what I was doing and sprayed fuel over body panel/fuel cap area. Has been there for 2 weeks now and looks quite bad, it seems the oil has ...
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0answers
32 views

Outside temperature vs recommended oil viscocity

Recommended oil viscosity is 10W30 for my motorcycle but temperature outside is getting higher these days it reaches upto 38 degrees on some days.Is is fine to continue to use 10w30 grade oil or I can ...
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2answers
67 views

Can you always use a higher API S code?

For one of my cars in the recommended oil it says 'Use API sj, sl or above' and for my other older car(99) it says use 'api sg, sh, or sj' but doesn't say above. Based on what I have seen it seems ...
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0answers
62 views

Toyota auris 2010 stalls when you remove oil cap while engine is idling

I was inspecting a used Toyota Auris (2009-2010). I turned the engine on and with the car idling I removed the oil cap from the engine. The car stalled within seconds and the engine almost shut down. ...
2
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2answers
267 views

What causes the difference in quality between engine oil brands?

I notice that different engine oil brands give poor or better performance even when using the oil has the same viscosity. What is the cause of this and why should you buy better known brands? Also ...
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2answers
1k views

Excess engine oil, when to burn off and when to drain?

I've read that too much engine oil can damage your engine, however I've also seen mechanics suggest you should just let excess engine oil burn off with driving so it's 'nothing to worry about'. These ...
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0answers
45 views

Does exhaust smoke always acompany engine burning oil?

Car(civic vti) is currently loosing a lot of engine oil. I've already put 4 liters in over a few months\maybe 1000k miles. Mechanics cannot find any leaks but they couldn't see smoke coming out of ...
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1answer
39 views

Can I determine amount of oil from engine size, cylinder, and/or displacement

Is there a way to determine how much oil I need to put into my vehicle for an oil change, from any of the size, displacement and/or how many cylinders the engine has?
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4answers
4k views

Is there a hack to repairing a seized engine?

Last week I drove on the interstate for about 1 mile when my engine died. the oil light never came on but it was low on oil and a couple thousand miles overdue for an oil change. I had it towed to a ...
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3answers
111 views

Can I change my oil filter 2 weeks after putting new oil in?

I recently done an oil change on my Audi A4 Avant 1.9tdi. At the time I didn't have the tool to open the oil filter so i couldn't change it. I've bought the took and am going to put a new oil filter ...
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0answers
328 views

Difficulty seeing oil on dipstick

On my 2009 impala 3.5L and 2004 f150 4.2L. I shut them off and wait a couple minutes and check the dipsticks, and it's always hard to see if oil is on there (seems to scrape oil from somewhere while ...
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1answer
124 views

Why is it suggested to change oil prior to storage?

As noted on both https://www.edmunds.com/car-maintenance/how-to-prep-your-car-for-long-term-storage.html and https://www.dmv.org/how-to-guides/storage.php they seem to suggest that leaving old oil in ...
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2answers
100 views

Is PAG 46 compressor oil compatible with a 2006 Touareg W12?

I have a bottle of PAG 46 oil. Is it compatible with the compressor on a 2006 VW W12 Touareg?
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0answers
186 views

Mark II Can bad oil stall, rough idle engine?

My 2001 Toyota Mark II Grande, Engine TA-JZX110, Automatic Transmission, 2.5ltr engine has been stalling and reflecting the check engine light, and showing two codes on diagnostic machine : VVTi ...
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1answer
68 views

Do oil grades for car change when they become older? [duplicate]

Car is a civic vti 1999. I've asked on forums and honda themselves who said so long as my weather isn't extreme one way or another, I should use 0w30 or 5w30 engine oil. When I went to pickup the ...
3
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2answers
1k views

Is it beneficial to run high viscosity oil in an old engine near the end of its useful life?

I have often heard that high viscosity oil (higher than what the manufacturer recommends) is good for old engines, engines that are nearing the end of useful life. So, for example let's consider a ...
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0answers
208 views

White smoke (lots) from 95 4Runner tailpipe

I have a SEVERE oil leak on my 95 4Runner (v6 3VZE). I put a quart in every day or two. Yesterday I felt she needed extra love so I put in two quarts. Now she's billowing huge plumes of white gray ...
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3answers
148 views

Very concerned about engine damage after a botched oil change

How can I be sure the engine, etc of my leased 2014 RAV4 are NOT damaged? Oil change by NTB Friday 8/31/18 resulted in MAJOR oil lose by Sunday 9/2/18. They admitted they caused it by over-tightening ...
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3answers
5k 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
445 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
279 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 ...
3
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1answer
644 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
31 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
195 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
1k 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
101 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
25k 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 ...
2
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3answers
424 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 ...
1
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1answer
320 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 ...
4
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2answers
266 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 ...
3
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2answers
28k 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 ...
3
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1answer
71 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
71 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 ...
3
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2answers
305 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
50 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
2k 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?
1
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1answer
520 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 ...
2
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1answer
67 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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0answers
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
1k 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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0answers
1k views

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
953 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
16k 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
2k 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 ...
2
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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 ...