Added a quarter 10w40, problem?
I was on my way to an event at an airfield, time was an issue and the gas station didnt have anything better then 10w40. The oil lamp just lit 10 minutes earlier and I thought a quarter 10w40 would be better then nothing, right? I've got a service coming up in about 1½ month.. Any reason for concern? Should I change the oil?
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