I hate to say it, but Walmart has the cheapest good quality oil and trans fluid. Their brand name is Super Tech, and I've been using their engine oil and trans fluid for 3 years in 2 vehicles. -It's excellent quality and made by a major American refinery. -Their oil filters are also excellent value.
A Cheap motor oil
Motor oils come in different grades. The higher the grade, the better quality the motor oil. Some high end vehicles require better quality motor oil to run at their utmost. Otherwise, any grade will do.
Motor oil is not for zippos. You can buy motor oul at any age with no problems. Zippo fluid is different, you can buy it at any age, but store's won't sell it to you usually
All major brands of oil are excellent at protecting and lubricating your engine. The oil filter is just as important so buy a quality filter such as AC/Delco, Purolator, Wix, or Bosch and avoid cheap brands. The brand of oil is your choice. I use Pennzoil and have never had an internal engine problem in 40 years with this brand.
I can remember my father buying a case of 24 quarts of high quality motor oil for around $7
Because the oil becomes contaminated with moisture, sludge, and unburnt fuel. Simply put the oil gets dirty. Just as important is to change the filter every time you change the oil and always buy a quality filter.
There's no hard and fast rule here. You like something you buy it. The bigger place you buy it from, the more assured you can be of quality. I'm not saying that cheap paintings have bad quality, it's just that bigger places have a lot at stake in terms of reputation so they would not take a chance.
It doesn't take motor oil! Special kind of oil you buy from the dealership! Cost about $10 a bottle
No, but the 4.0L straight 6 motor wont see any benefit, this motor works best on straight 30W Heavy Duty oil. It is basically a suped up tractor motor. Most can go 300k+ miles. So if you have the 4.0L save money on oil and buy Rotella and put your money into a better oil filter. So if your oil pressure drops to 0 at idle its probably a Fram or other cheap oil filter.
quality ingredients and exceeding industry standards
If you are looking for a good place to find cheap oil change that does not lack in quality
If you are looking for a good place to find cheap oil change that does not lack in quality because your car has not had an oil change in over 6 months, then you can go to Bill's Automotive Company.