The Classic Opel Forums - View Single Post - Fuel economy 'how-to' thread

bullmoose · 11-05-2007

I am traveling about 1100 miles this week between Kansas and Idaho. My mileage is all over the place, but getting better. Before the trip, I replaced the 20w50 with 10w-30, had the exhaust fixed, took out the weak electric fan and put the original one back on. I got around 22-24 this morning in the midwest, and almost 29 this evening in the mountains. I haven't quite figured out the reason for the difference, but it's all better than the 11MPG I was getting a few months ago. I have noticed that I get better mileage from Conoco and Mirastar stations, but junky mileage from Sinclairs. Am I crazy or is there really something to this?

11-05-2007	#59 (permalink)
bullmoose Hire me Now! Join Date: Oct 2003 Location: Kuna, Idaho Posts: 61	update I am traveling about 1100 miles this week between Kansas and Idaho. My mileage is all over the place, but getting better. Before the trip, I replaced the 20w50 with 10w-30, had the exhaust fixed, took out the weak electric fan and put the original one back on. I got around 22-24 this morning in the midwest, and almost 29 this evening in the mountains. I haven't quite figured out the reason for the difference, but it's all better than the 11MPG I was getting a few months ago. I have noticed that I get better mileage from Conoco and Mirastar stations, but junky mileage from Sinclairs. Am I crazy or is there really something to this?