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I've been running it in everything that moves for 20 plus years. Mowers, ATV's, 17 cars and light trucks, Motorcycle, Class 8 truck, you name it.

A couple of years ago though they discontinued 5w30 diesel-spec so I have had to switch back to gasoline-spec for winter use. Summer I have been using the 10-30 and 15-40, whatever is sitting on the shelf in the shop. I have a high performance street bike and there is no screwing around there with the bike crowd: the goto oil is Rotella 15-40.

As far as any sort of racing/recreation application, let me put it to you this way: if diesel-spec oil is good enough to run in a 15 liter engine pulling 100,000 plus pounds up 10% grades in 100 degree heat for 250 hour change intervals it can handle a few seconds of 1/4 mile abuse.

As far as the percieved need for Zinc content I'd rather not comment on it, as I just simply find it irrelavant knowing what diesel-spec oil is subjected to from personal experience:

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I agree, I run diesel oil in everything I own. My uncle got me started on it when I bought my first car. He used to build short track engines for several local guys and always ran 15-40 diesel oil in them and never had a failure. He said you could tear one down and it was as clean as the day you put it together

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I've been running it in everything that moves for 20 plus years. Mowers, ATV's, 17 cars and light trucks, Motorcycle, Class 8 truck, you name it.

A couple of years ago though they discontinued 5w30 diesel-spec so I have had to switch back to gasoline-spec for winter use. Summer I have been using the 10-30 and 15-40, whatever is sitting on the shelf in the shop. I have a high performance street bike and there is no screwing around there with the bike crowd: the goto oil is Rotella 15-40.

As far as any sort of racing/recreation application, let me put it to you this way: if diesel-spec oil is good enough to run in a 15 liter engine pulling 100,000 plus pounds up 10% grades in 100 degree heat for 250 hour change intervals it can handle a few seconds of 1/4 mile abuse.

As far as the percieved need for Zinc content I'd rather not comment on it, as I just simply find it irrelavant knowing what diesel-spec oil is subjected to from personal experience:

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I've been running it in everything that moves for 20 plus years. Mowers, ATV's, 17 cars and light trucks, Motorcycle, Class 8 truck, you name it.

A couple of years ago though they discontinued 5w30 diesel-spec so I have had to switch back to gasoline-spec for winter use. Summer I have been using the 10-30 and 15-40, whatever is sitting on the shelf in the shop. I have a high performance street bike and there is no screwing around there with the bike crowd: the goto oil is Rotella 15-40.

As far as any sort of racing/recreation application, let me put it to you this way: if diesel-spec oil is good enough to run in a 15 liter engine pulling 100,000 plus pounds up 10% grades in 100 degree heat for 250 hour change intervals it can handle a few seconds of 1/4 mile abuse.

As far as the percieved need for Zinc content I'd rather not comment on it, as I just simply find it irrelavant knowing what diesel-spec oil is subjected to from personal experience:

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Diesel oil is designed for engines that go down the road at under 3000 RPM. What effect will that have on an 8000 rpm race engine? Will it have sufficient anti-foam qualitys? Has it been tested in high RPM applications?

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most diesel I see is specked for everything turbos included.

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Diesel oil is designed for engines that go down the road at under 3000 RPM. What effect will that have on an 8000 rpm race engine? Will it have sufficient anti-foam qualitys? Has it been tested in high RPM applications?

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Joel, the motorcycle that I mentioned is my Aprilia 750 and I can wind it out well past 8000rpm and the 600cc guys are 12,000 plus. Like I said the bike crowd is really behind the diesel-spec oil and a very high percentage of them are using it.

Put another way, yours and my special friend "winter fuel" is a cute game the blenders get to play on us with gasoline engines because the tolerances in a gas engine are pretty wide. Same goes for gasoline-spec engine oil: they can fart around with it and throw whatever is in the bottom of the barrell into a jug of oil. The tolerances in a diesel engine are more like a Swiss watch and the blenders can't fuss around when it comes to diesel-spec oil or fuel.

100 Low Lead and Diesel-spec oil: I bet my last dollar on both.

If you do decide to try it just stick with something like Mobil or Shell; none of that royal purple, amsoil, pennsoil or the rest of them fly-by-night companies.

Hope that helps.