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Well from personal experience and some minor training, I simply just stick with Fram filters for air and oil. Never have had an issue with them, and considering only a few companies make all the dozens of "named filters" out there, it is not too hard to get the same filter innards with a different "can" around it. I also agree and recommend testing in doubt, and changing oil more frequently than the standard service interval. Having said that, please note that many quick lube places are actually quoting severe duty intervals as the standard interval. 3 months or 3,000 miles is a good old choice for carb engines, and for cabs or other severe duty vehicles. Common standard duty intervals are often double or even triple the severe duty cycle. Ford/Lincoln often recommends 6,500 miles between oil changes. GM often states 5,000. Toyota for a while was claiming 7,500 which can still be done depending on a lot of variables. My personal vehicle gets changed every 3,000 miles with Valvoline DuraBlend 5w30 (personal choice) while an old 68 Plymouth Fury II received Quaker State conventional 10w30 every 3,000 miles. The Fury I sadly no longer have, but at 183,xxx I pulled the venerable 318 out and replaced seals and did not have to deal with any sludge (ha, take that you Caker State whiners) lol. Reset the engine and it drove for another 100,xxx before selling off.
The Impala, well I dont drive it much currently, so I am keeping a check on the oil when I do get home to make sure it is not acting funny. Now for the Freightliner Columbia ( I had seen someone ask about heavy duty truck engine oil interval ) Detroit Diesel recommends oil changes between 20,000 to 30,000 miles. 20k during breakin, and 30k for normal. Sadly the company I work for wants to stretch this out to 40k, which is against Detroit Diesel recommendations. Now please also remember, while the car is holding 5 quarts of oil, the Detroit in my tractor-trailer holds 12.5 gallons of oil... big difference and with the larger filters, its easier to go a bit longer between oil changes...lol.
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