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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. [1] [2] [3] [4]

3. When Should You Change Your Oil? - AOL

   www.aol.com/change-oil-183100994.html

   Not surprisingly, service providers (oil-change shops and dealerships) tend to recommend shorter change intervals (3000 to 5000 miles). That can never hurt your engine, but it also means they'll ...

4. Motor oil - Wikipedia

   en.wikipedia.org/wiki/Motor_oil

   This has led to a campaign by the California EPA against the "3,000-mile myth", promoting vehicle manufacturer's recommendations for oil change intervals over those of the oil change industry. The engine user can, in replacing the oil, adjust the viscosity for the ambient temperature change, thicker for summer heat and thinner for the winter cold.

5. Hydraulic tappet - Wikipedia

   en.wikipedia.org/wiki/Hydraulic_tappet

   As mentioned, one may avoid this by using the manufacturer-recommended grade of engine oil, and by not exceeding the prescribed oil change interval. It is a myth that in certain circumstances, a lifter can "pump up" and create negative valve clearance. The engine oil pump cannot generate enough pressure to cause "pump-up".

6. Pennzoil - Wikipedia

   en.wikipedia.org/wiki/Pennzoil

   Pennzoil is an official long-term recommended motor oil of all Stellantis companies (including all of brands and subsidiaries excluding Peugeot, Citroën, DS Automobiles, Opel and Vauxhall with TotalEnergies), BMW, Mini, Rolls-Royce, Hyundai, Genesis, Chevrolet (shared with Mobil 1 and Valvoline), Ferrari and Iveco for automobiles in United States.

7. Crankcase dilution - Wikipedia

   en.wikipedia.org/wiki/Crankcase_dilution

   Blow-by” gases are a mix of fuel oil and exhaust gases that push past the piston rings. Crankcase dilution is caused more when the lube oil is fresher. [3] Another cause of crankcase dilution is a slow or delayed injection cycle. [2] This causes the timing to be thrown off and the oil is most likely to enter the crankcase at this point.