Motor Vehicle Maintenance & Repair Stack Exchange
Motor Vehicle Maintenance & Repair Stack Exchange

Questions tagged [gasoline]

Colloquial term for 'gasoline', a liquid petrochemical refined from crude oil and used in internal combustion engines as fuel.

Colloquial term for 'gasoline', a liquid petrochemical refined from crude oil and used in internal combustion engines as fuel.

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What are the benefits of premium (high octane) petrol?

Here in the UK it's common for petrol (gas) stations to offer both regular and "premium" unleaded petrol. The premium stuff is (naturally) more expensive, and I've often wondered what the actual difference is. Would I need to fill up with premium…
Simon Whitaker
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Why do heavy vehicles almost always use diesel engines?

I have always wondered why heavy vehicles such as large trucks and buses almost always use diesel engines, whereas in light cars there is a choice between diesel and gasoline engines. Engine efficiency might explain the preference towards diesel…
juhist
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How to (relatively safely) store a small amount (200 milliliters) of gasoline for up to a month?

In my country of residence (developing nation) I sometimes see people stopped alongside the road because they apparently forgot to buy fuel or couldn't afford it. I also would like to be able to push a bit further on my motorbike since the fuel…
Sebastiaan van den Broek
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Should I really keep my gas tank at least half full?

I've seen a number of sources that state you should keep your car's gas tank at least half full, some of which saying it's only important in winter. Some…
Daniel Griscom
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What happens if you put the wrong kind of gas in your car?

I (like most people) just use regular unleaded gas in my car and always have. But once I accidentally put in the premium kind, mixing it with the unleaded that was already there, and I thought for sure my car was going to explode or something, but…
temporary_user_name
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Why not use gasoline on diesel engines or vice versa?

I've read gasoline engines use sparks to ignite the mixture, but diesel engines use just compression which can't be done in gasoline engines due to high compression ratios which can cause engine knocking, but if that was true gasoline? It can then…
user3407319
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Why does diesel engine have redline much lower than petrol engine redline?

Why do diesel automotive engines redline at around 4500 rpm whereas petrol ones go to 6500-8000 rpm? Does this have something to do with the compression ratio?
saurabh64
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Haven't driven a car since the start of the pandemic; can it be driven without special measures?

Because they're older, my in-laws have been in quarantine since early March and haven't driven their car at all. It's been sitting in the driveway in New Jersey (USA) the whole time, in mostly above-freezing and then warm and hot weather. The car is…
Joshua Frank
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Should I use gasoline 87, 89 or 93 on 2016 RAV4 SE

I read many articles online and people have different opinions about this issue. Some say 89 is the best for acceleration. Others say 87 is just fine. I'm worried only about the health of my car. So I read my user manual. Here are the…
Emily
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Do cars consume less gasoline when the tank is full?

I noticed While driving my car the fuel refills last me a lot longer when I go for the full tank over the half tank. I feel that it takes a lot longer to go through the upper half of the tank than the bottom half of the tank. I felt that keeping a…
Anwar Elhadad
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Why do we mostly use fossil fuel instead of a more reliable and larger sum fuel?

Why do we mostly use fossil fuel instead of something like... Alcohol? We used it in a portion of our gas, so why don't we use it in greater quantities? Obviously there's a reason. My guess is alcohol does not contain enough oxygen to allow for a…
LostPecti
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Wrong octane fuel

I have a 2014 Fiat Punto and have been using 92 octane gas. I have never read the manual, but am now told I should use 95. Should I use what is in the tank before filling with 95 or is it OK to mix them.
Judith hb
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Toyota Prius Mk2 "gasoline only" operation mode

I want to get a used Toyota Prius Mk2 (XW20). I do not necessarily need to operate it in hybrid mode (gas + electric) and I am OK with operating it in a kind of "gasoline only" mode (because of a research project). My main concern is the traction…
Kozuch
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How long will gas stay fresh in a five gallon plastic container

How long will a 5 gallon plastic containers of fuel stay fresh?
robert hodge
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Can I dilute 2-stroke gas and run it in my riding mower to get rid of it?

Over the winter I needed a chainsaw, I mixed a gallon of gas for it and unfortunately it just refused to start which gave me the motivation to purchase an electric chainsaw which did the job wonderfully. Problem is, now I have a gallon of two-stroke…
Sidney
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