05LegacyGT330Ci Posted February 10, 2005 Share Posted February 10, 2005 BMW uses synthetic for your 330 right? They do for our MINI which has the same service interval. One of my old customers who was an exec at Mobil told me you could reliably go 25K on Mobil 1 without changing the oil. The problem is not the oil, but the filter. The filter gets clogged before the oil breaks down. If there was any easy way to change filters without the oil, then you could really deal with oil changes at 25K. As cool as that is to hear, we are creatures of habit. Even when I used Mobil 1, I did my oil changes at 5K miles. Yes they do use synthetic but its not that expensive to just have it changed so I just prefer having it done every 7500. Song of Post- Sublime- Freeway Time In L.A. County Jail '05 Black Legacy GT Wagon 5-spd '02 Topaz/Black 330Ci 5-spd Drift Ryder's School of Rally Arts, coming to an Australia near you. Link to comment Share on other sites More sharing options...
nKoan Posted February 10, 2005 Share Posted February 10, 2005 Thats what I keep hearing for synthetic oils. Change every 10k, but do the filters every 3k. Top off as needed. Link to comment Share on other sites More sharing options...
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