Not until the sulpher content was reduced did the prices get so far apart. Mid 90s I think is when the first cut of sulpher was down to 500ppm. that is when the prices started to climb because of the added steps in the refining process.

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86 300SDL. 250,xxx on #14 Head. One eye always on temp gauge.. Cruising towards 300K

I always shake my head in amusement when people tell me they are glad they don't have a diesel and they could care less about the cost of diesel fuel. I tell them the oil companies are laughing at them.....all the way to the bank. My theory is this.... People scream bloody murder when gas prices are high, so the oil companies say "ok, lets lower gas prices a bit to shut them up and raise Diesel prices to make up for it. Ergo, nobody will complain much about Diesel prices. All the while, EVERYONE is now paying for it, as trucking companies pay more for fuel, and they pass on the added cost to the stores. The stores pay more for shipped goods, so they pass on that cost to the consumer. Last time I looked nearly everything in the US is moved at one point or another by truck (diesel truck that is)

Therefore I tell everyone stop *****ing when gas prices go up, you should be raising holy hell when diesel prices go up, because that is going to affect EVERYONE. And since people are quiet about it because "They do not drive a diesel car/truck" the oil companies are laughing all the way to the bank

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2012 Mercedes ML350 Bluetec 102K (hers)
2005 Corvette 55K (fun car)
2002 VW Jetta TDI 238K (mine)
1998 Volvo S70 T5 Turbo 211K (kids)
1994 Ford F150 4WD 246K (firewood hauler)
1983 Mercedes 300D 384K (diesel commuter)

Well, I've only been driving since 2002 and I recall it generally being higher in my area.