Originally Posted By: wemay
But I'd trust Valvoline synthetic oils as much as any other non-extended drain major brands.
Too bad Valvoline doesn't believe in their oil as much as you do; this is what is so off-putting to me about Valvoline products:
https://valvoline.promo.eprize.com/engineguarantee/display_page
Part of which reads, "A Word on Oil Change Indicator Lights
We believe most consumers can rely on these indicator lights, even though they represent only a computer’s guess that it is time for an oil change. Typically, such systems continuously monitor everything from vehicle speed, rpm, oil and coolant temperature in order to calculate motor oil additive degradation. A more accurate assessment of your oil's condition would require laboratory testing.
We decided to stick with the 3,000 to 4,000 mile interval for the Valvoline Limited Engine Guarantee to be safe and reflect the way most people drive. At Valvoline’s laboratory and engine testing facilities we’ve NEVER seen an engine failure when the oil is changed at 3,000 to 4,000 miles using quality Valvoline products."
So, they want you to buy their synthetic oil and run it to a max of 4000 miles, ignore the OLM, ignore your personal driving style, and buy more Valvoline because they've never seen an engine fail with 3000 mile oil changes with their products.
At best, the logic is archaic, and at worst it's just marketing hype.