240canuck wrote:my 92 s13 tends to burn about 1/2 litre every 3 weeks. It has no leaks whatsoever and I check the oil every 2nd day and every 3 weeks all of a sudden its down half a litre. I use synthetic oil would that nake a difference? Also does using a factory Nissan oil filter actually do anything? Just askign cause i can get factory filters for like 5 bucks or get after market for 0 bucks.(canadian)