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2. 3,000 mile myth - Wikipedia

   en.wikipedia.org/wiki/3,000_mile_myth

   With modern synthetic oils and new tests such as BMW's LL ("long life") oil specifications, most current cars can go over 6,000 miles (9,700 km) before needing an oil change. Even most modern conventional oils (also called mineral oils) can take a car engine at least 5,000 miles (8,000 km) before needing an oil change.

3. Oil pump (internal combustion engine) - Wikipedia

   en.wikipedia.org/wiki/Oil_pump_(internal...

   This harmful debris along with normal engine wear in high mileage engines causes an increase in clearances between bearings and other moving parts. Low oil pressure may be simply because there is not enough oil in the sump, due to burning oil (normally caused by piston ring wear or worn valve seals) or leakage.

4. Motor oil - Wikipedia

   en.wikipedia.org/wiki/Motor_oil

   These are much more severe conditions than any API-specified oil was designed for: cars which typically push their oil temperature consistently above 100 °C (212 °F) are most turbocharged engines, along with most engines of European or Japanese origin, particularly small capacity, high power output.

5. 15 Red Flags to Watch for When Buying a Used Car That Could ...

   www.aol.com/15-red-flags-watch-buying-200000362.html

   Oil, coolant, or transmission fluid leaks can lead to significant repair costs, so make sure the ground under the car is free of rapidly spreading pools of liquid. sshepard/istockphoto 5.

6. Geo Prizm - Wikipedia

   en.wikipedia.org/wiki/Geo_Prizm

   This prevents oil burning and valve guide failure in the future. Although these efforts theoretically would have decreased oil burn, a flawed piston ring design affected all engines without VVT-i. This new engine design, [4] although decreasing oil consumption from some components ultimately caused oil burning in higher mileage examples. [5]

7. Oil sludge - Wikipedia

   en.wikipedia.org/wiki/Oil_sludge

   Oil sludge or black sludge is a gel-like or semi-solid deposit inside an internal combustion engine, that can create a catastrophic buildup. It is often the result of contaminated engine oil and occurs when moisture and/or high heat is introduced to engine oil.