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3
votes
2answers
55 views

Oil low - incorrect oil already in. Stick with the wrong type or add correct type? [duplicate]

Vehicle: 2004 Mini Cooper (1598cc Petrol, 3-door hatchback) (United Kingdom). My knowledge-level: Low. Background: My oil level is below 'minimum'. I suspect a leak and have booked it into the ...
12
votes
2answers
1k 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
0answers
50 views

Are More Recent API Oils always “Better”?

The API ( American Petroleum Institute ) provides certifications for engine oil. Such certifications range from SA for 1930's era vehicles up to the current standard SN. The above linked document ...
8
votes
1answer
69 views

Effects of sunlight on engine oil

I have a 5 litre bottle of oil out back that I was going to top my car up with when I realised it's been out on the sun for about a month, the bottle is opaque and does not let sunlight through (apart ...
3
votes
4answers
9k views

Lubricating rubber fuel hose for easier future removal

I just changed my fuel filter, the connections to which are rubber fuel line fitted over metal pipes with bulging ends -- a bit like a barb. (There's a photo at http://i.stack.imgur.com/oH0Ns.jpg if ...
3
votes
1answer
44 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 ...
7
votes
2answers
355 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? ...
6
votes
1answer
45 views

Heim joints with zerk fittings

On my truck I have heim joints setup in the steering to provide additional strength. Currently I have a 3/4 by 3/4 heim with teflon coatings, and with the mud and dirt where I live, they are getting ...
12
votes
2answers
5k views

How does ambient temperature affect engine efficiency and fuel consumption?

I remember from my physics class that the ideal-gas Carnot engine is more efficient if the temperature difference between the heat source and the thermostat ("heat recipient") is larger (http://...
8
votes
3answers
161 views

What prevents engine oil from mixing with petrol in motor bikes?

Engine oil is used in the lubrication process, at the same place petrol is also there. What prevents engine oil mixing with petrol in motor bikes?
15
votes
2answers
10k views

Is Anti-Seize a lubricant, abrasive, or both?

I'll flesh my personal bias at the outset - being a heavy diesel mechanic for a time, and mechanically inclined my entire life, I use Anti-Seize wherever I can. If it has threads and it's not part of ...
5
votes
1answer
232 views

I lubed a sticky throttle and now it's worse, but only in the cold

I've been teaching my friend to drive stick on my Subaru 2004 Impreza Outback Sport, and the gas was a little sticky/crunchy, so it was hard to give just a little gas. It was either none, or a little ...
10
votes
4answers
12k views

How to stiffen up a loose ball & socket joint for a motorcycle mirror?

I have bar-end mirrors on my Buell 1125CR. They're fairly heavy anodized aluminum pieces that pivot on a ball & socket joint for adjusting the angle of view. One of them fits snugly on the joint, ...
4
votes
1answer
122 views

Oiling lawn mower air filters

Why does the air filter on a lawn mower need to be oiled? Is it true that major engine damage will occur if the intake air filter is not oiled?
4
votes
1answer
1k views

Assembly lube or engine oil when reassembling cylinder heads

I have read differing opinions on what should be used to lubricate cylinder head parts, such as valves, lifters, camshafts and bearings when reassembling cylinder heads. Some prefer engine oil while ...
6
votes
2answers
119 views

Looking for a suitable lubricant

I'm rebuilding a Lucas windshield wiper motor. It's pretty old and the manual recommends using Ragosine Listate grease for the gear and connecting rod and Shell Turbo 41 for the bearings. Neither is ...
3
votes
1answer
5k views

What is the correct way to clean and lubricate the chain of a Yamaha FZ 16?

I own a 2011 Yamaha FZ 16 bike; which has an open chain; occasionally dirt gets accumulated to the chain and despite my many attempts I am unable to properly clean the chain. Also could you also help ...
1
vote
1answer
219 views

Can I use Mercon V as power steering fluid?

My manual for my 2001 Ford F-150 (4.6L v8) says that the transmission fluid is "Mercon V". For power steering fluid it lists "Mercon". I can't even find something on the shelf listed as "Mercon". I've ...
19
votes
3answers
6k views

What differences between synthetic and dino oil?

What are the main differences between synthetic and dino oil, and is one always better than the other?
2
votes
1answer
326 views

2012 Dodge Caravan - Lubrication of door channel

Both the sliding doors make a grinding noise when opening or shutting down. The place I take this to for an oil change claims to lubricate doors and windows. Now I am not too sure. What level of ...
2
votes
3answers
176 views

When should we change the machine lubricant? Cold engine or hot engine?

According to the manual, we should change the lubricant when the engine is still hot to easy the lubricant flow out completely. But from other perspective, loosening the bolt at the high temperature ...
2
votes
3answers
10k views

Difference between “Hypoid” and “Limslip” oils

Recently I changed the oil in my vehicle's rear differential. The manual recommended the use of a "Hypoid" oil, but the guy at the auto parts store suggested a "Limslip" oil instead. I went along ...
8
votes
3answers
3k views

Should lost CV gaiter grease be replaced?

I discovered a small hole, possibly a puncture, in an outer CV gaiter on the front. The hole was right next to/under the (outer) metal ring holding the CV gaiter, so it wasn't in a very flexible bit. ...
5
votes
1answer
504 views

What should I use to lubricate the flaps that controls the temperature and which vents the air comes out of?

The control shafts that move the flaps which control the the hot/cold air and which vents the air come out have broken. The car is a 1999 93 Saab so I'm assuming that the hinges (the flap has a peg ...
1
vote
2answers
243 views

Squeaky door gets the grease?

When should you grease a door hinge? When it's dry or when it starts making noise? Is there a universally appropriate type of grease to use? How should it be applied?
9
votes
2answers
3k views

How does the change oil light system work and does it matter what type of oil you use for it to work properly?

I want to know if the methods a vehicle decides when to turn on the oil change light have to do with the qualities of the motor oil used in the last oil change. I have heard that the vehicle's ...