I'll make sure to tell my indy that. This car has never seen veggie oil, but I have started running commercially produced B20 on it (so smooth!), which might have affected some of the rubber seals. I hadn't thought of that, it's very good to know.
If I run on the highway, it certainly drips oil. Not as much as my last one, but certainly dripping.
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Originally Posted by Volvo Diesel
I would first look for leaks before doing any major work. I had the same thing (tiny spots of oil, and a lot of it) on the rear of my old 300D, which was manila beige, evident after highway driving. I also had high oil usage during highway runs. It turns out I had several leaks that were at their worst when driving at high rpm over extended periods. The seal between the oil filter housing and block was one of the major leaks I had. In my case, fixing the leaks took care of the oil on the deck lid. If the car runs well otherwise, I don't know that I'd be too eager to spend a huge amount "fixing" it, as there isn't likely to be much return on your investment; I'd probably just drive it. If you parked the car on a nice clean driveway after driving it 2 hours on the highway, would it drip any oil?
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