The latter. Your oil consumption is stellar and imho, everything else is snakekoil
Originally Posted By: orso
I would appreciate your opinion on my situation: Mazda 3, 2.0 petrol, direct injection, almost 45k miles. Driven mostly urban and highway and maybe 20% country roads, mostly easy driving at lower RPMs. I change the oil every 10,000kms (20,000kms is the highest limit given by the manufacturer). It consumes approximately 0.75l of oil per 10,000kms (that is 1.2qt per 10,000 miles). There is no evident oil leak. Engine is clean. I know it is not high consumption but I was thinking about trying high mileage oil (Maxlife is the only available HM oil here) and see whether the oil consumption will decrease. It could revitalise valve gaskets a bit if they are responsible for the oil consumtpion. The problem is my Mazda dealer insists on using Mazda original oil and I am very satisfied with their services otherwise so I do not want to change the dealer. There is Valvoline engine stop leak product available here and they claim it can revitalise the gaskets and seals. Do you think it is worth a try to mix it with the Mazda oil? I know many people are against oil aditives and I agree. But this is Valvoline so I kind of trust it more Or should I stop doing experiments and simply top up oil regularly?