Oil expands when heated, and contracts when cooled. So if you had some potatoes floating on an oil planet, higher temperatures would correspond to a larger planetary radius, and the potatoes would be further from the center. The result is that the potatoes would be lighter. So, higher oil temperature results in lighter potatoes, and conversely, lower oil temperature results in heavier potatoes.
If the oil temperature gets high enough, however, two things could happen. One is that the dense potatoes would sink to the center of the planet, where the gravitational forces are equal in all directions and cancel, so they would weigh nothing. Another possibility is that the potatoes would be fried, and depending on their resulting structure they could either float or sink. The question cannot be fully answered without knowing more about the oil, the potatoes and the potato geometry.
This is a tricky question but simple at the same time. 15w-40 oil is never a 40 weight. As you know oil thins as it heats up. What the 15w-40 designation means is that the oil starts out at 15 weight but thins out like a 40 weight as it gets hot (i.e. it stays thicker for a longer period of time). If i could draw you a graph you could see this much plainer. A 5w-30 oil starts out as 5 weight but thins like a 30 weight. Does that make sense?
A large bag (1 pound) might have 10 to 12 medium potatoes, a snack bag (1 oz) would probably have come from a single potato. The frying process replaces the water weight with some oil, so the weight of the potatoes was about 4 times the weight of the bag of chips.
Because oil has more fat in it
The brand and weight of oil you use has no effect whatsoever on passing a smog test. Use the exact weight of oil that is recommended by BMW.
No, it could actually decrease fuel economy by decreasing the oil viscosity.
The W is implies as winter. Basically on the coldest day of the year in winter 5w-30 will have the viscosity of 5 weight oil of that particualr temp. (no temp is specified) and a the second 2 digit number is the viscosity at 100 degrees centigrade
will covering peeled potatoes in olive oil keep them from turning brown
no,oil will but temp will not
The battery loses some zip as the temp drops. Also you may want to use a lower weight motor oil when the temp drops, maybe a 5W-30.
Which temp? Oil, Water or Outside air?
A little less than one gallon of water which is (depending on the temp of the water) 8.34 lbs.
5w-30 outdoor temp. from & below 0 F (-18 C) to 100 F (38 C) 10w-30 outdoor temp. from 0 F (-18 C) to 100 F (38 C) & above temp.