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15

Wikipedia has a great page on Synthetic Oils, specifically their performance. Pros: Better high and low temperature performance. They act more like a thinner oil at lower temperatures and like a thicker oil at higher temperatures, without the disadvantages of multiviscosity oils like 10W40. Especially useful when initially starting. Reduced problems ...


14

A full synthetic oil, as the name states, is "synthesized". By that, they mean it is made in a lab, it is a manufactured product. Organic (Dino) oil is a product of nature. So the big difference is the environment in which the oil is made in. The main selling point on synthetic over organic is because it is manufactured, it is made in a controlled ...


12

tl dr - Have no fear of Vaseline and o-rings O-rings are made out of many different materials. I would suggest that those o-rings which are made to work in the automotive realm are made to be resistant to things such as oil, gasoline, and other petroleum products. This would include Vaseline. While Vaseline and other petroleum products may degrade real ...


11

I found a reference pdf for GM's Oil Life Monitor System. How does the system work? The GM Oil Life Monitor System is not a mileage counter. It is actually a computer based software algorithm that determines when to change oil based on engine operating conditions. There is no actual oil condition sensor. Rather, the computer continuously monitors ...


9

Yes you need to replace the grease when you replace the boot. That grease lubricates the joint, if you don't have enough inside the boot the joint can fail prematurely. On a side note don't use one of the quick boots (the ones designed to be put on without taking the CV joint off of the car), in my experience they are worthless. Here is an example of a ...


8

tl;dr: Ambient air temperature should generally not interfere with engine efficiency or fuel consumption, but will affect overall power output. Do not confuse efficiency with power output. These are two separate things. When your intake charge is more dense, you can throw more fuel at it and creates more power. (NOTE: The idea for the engine management ...


8

No. As far as I can tell, there is no reason that Vaseline might gradually degrade the rubber O-ring on which it has been applied. O-rings that are manufactured for automotive purposes do tend to be made in a rather durable fashion so as to be able to withstand whatever sort of fluids that might accidentally get spilt during car maintenance. If you are ...


8

Engine oil is normally kept inside a light-proof steel box (your engine), so you might not find much information on how it's affected by sunlight. However, other industries use lubricating oil that can be exposed to the sun, and I found this report: Sunlight Degradation of Lubricants UV light is the enemy, and it can affect oil: On a molecular level, ...


7

The oil pan never gets hot enough in normal operation to soften the metal of the oil pan or the drain plug, and any thermal expansion at that temperature also shouldn't be much of a concern. For me the ideal temperature is maybe about 20-30 minutes after a drive, or when I can safely put my hand on the drain plug for a few seconds. The oil is still warm ...


7

Mixing new with the old will cause you absolutely no issues. As long as you are using the same weight oil, it will mix up and you'd never know it. Continue to change your oil at the specified interval and you should be golden.


6

I'm not sure how long any sort of grease would last before it worked its way out? I'd be tempted to go for a more mechanical solution (if you have access to appropriate tools, or a frielndly machine shop) - drill a small hole in the socket and tap it to a suitable thread, then insert a grub screw to bear onto the side of the ball and stop it moving. That ...


6

The piston rings prevent the two from mixing freely. Note that it isn't possible to have the two perfectly isolated from each other. There will be a little bit of oil that gets burned during consumption, and some exhaust gases will find their way into the crankcase. As these rings wear, the amount of oil lost to the combustion chamber increases. If a ...


5

Remove the shaft, and throw the boot away. Clean out the old dirty grease, after cleaning the part of course, and replace both the grease and boot. This gives you a chance to inspect the joint, and clean up any dirt residue that will speed up the deterioration of the CV joint.


5

Specifically a foam filter for a lawn mower needs oiled, but just lightly. A foam filter lacks the ability to stop small particles as compared to a paper filter. The oil is added to make the filter "sticky" to these small particles giving the foam filter better filtering capability. As far as major engine damage, probably not. Worst case scenario the engine ...


4

By the time you need a fuel filter change it is time to replace the hoses also. Simply cut the hose off the fuel line and replace it using new clamps. When you get you filter ask the person at the counter for a foot of high pressure fuel hose. There was a time when they actually included the hose section and clamps in the box with the filter.


4

You state the mirrors are anodized aluminum, but if the ball or socket are steel, you might try (gasp) intentionally rusting one of the surfaces. Here's one technique for accomplishing that.


4

Lower "cold side" of the Carnot cycle leads to better theoretical efficiency, sure, but have you calculated how much? 10-20 K colder intake with the same 1000 K combustion temperature affect final efficiency by 1%. And that efficiency is 70% in any case, so you can guess that there are so many more parameters lowering the final efficiency to 25%, that the ...


4

I would not use assembly lube with the valves (in the valve guides), but just oil there. The reason for this is because there is no way to flush the assembly lube out of this orifice like there is in other places throughout the engine. My preference is to use assembly lube for the rest of the parts. Assembly lube will keep the parts from chafing (wearing ...


4

Oil Scavenging Rings There are several rings on a piston. Depending on the application and use of the piston it may have up to five ring grooves near the crown. Here are some points of interest. The top ring is always the compression ring. It does prevent some oil from getting involved in the combustion process but it is not it's primary duty. The ...


3

There are many lubricants that get 'gummy' with cold. Perhaps the following will help. Let the motor idle and become warm. if it takes 15 minutes or more, fine. Just ensure the area you have an issue with is warm. Turn the motor off. (safety first) Use a carb cleaner to spray off the oil you used to lubricate. Procure a product with ...


3

(Too late to help the OP, but for future searchers:) Aero people use United-Erie "EZ Turn Fuel Lube" (SAE or Mil Spec "G-6032D"). It isn't officially a sealant, so the clamps are still doing the work. But it is fuel resistant, thus forms a non-hardening layer between the metal and rubber parts, and you won't have to rip or distort the hoses from cranking ...


3

Low-tech fix: If you can find a way to grip it, you may be able to use a hammer and drift punch or very small chisel in order to pound/indent the lip of the socket (hole) inward toward the hole which has the effect of squeezing the socket tighter around the ball. Probably hard to do, but worth a mention.


3

I don't know about newer cars, however in older cars the "check oil" light is far less complicated - there is simply a sensor somewhere inside the engine block which turns the check oil light on if the oil goes below a certain level. At times when the oil in my engine has been low I've noticed that the light turns on and off (or even flickers) depending on ...


3

Absolutely. The great thing about having the zerks is when you put fresh grease in, the old grease comes out. With the old grease comes any dirt and grime which may have collected. This should keep your heim joint in good stead. Most heim joints are completely rebuildable, meaning you can take them apart, clean them, regrease, then put them back together. ...


3

Usually when changing the oil you won't be able to fully drain the old oil anyways and the old and new oils will mix, like it or not. Usually this is not a problem even if the weights are different, though it's safer to stick with the same brand, as some argue the components in the oil being incompatible may cause issues. What you should be wary of is ...


2

You should use what your manual specifically says, not the guy at the auto parts store. Nick C's answer in most situations will probably be correct, that it is just more expensive with more stuff in it that won't apply to your diff and not hurt anything. However, depending on your specific differential, those additional items could cause problems. As a ...


2

This is an educated assumption... In geology a mineral's hardness is measured according to different scales. A common one is Mohs scale of hardness, which ranks minerals from softest (talc) to hardest (diamond). The only way a mineral can scratch the other, is for the mohs hardness value to be higher. Now, according to the link: Graphite - 1.5 Copper - 3 ...


2

In lieu of a better (more specialized) answer, I would use high temperature grease. Nothing too expensive though, I doubt those hinges get hotter than 500F.


2

put the bike up on a rear stand clean the chain - use a degreaser designed for the purpose and a stiff nylon brush, wash a few bits at a time spinning the wheel to access more portions of the chain rinse off the degreaser use a water repellent to get rid of the water dry off with a rag use a good quality chain lube in a spray (there are different types ...


2

There isn't any kind of application you can apply to the hose to make it easier to take off at a later time. The reasoning is it would be too easy for the hose to slip off during normal operation. And by the time you replace the fuel filter again it wouldn't even be there anymore as it's not a regular maintenance object. Just doing what you did (Twisting ...



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