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Switched to a different additive for a 6.7 Powerstroke and the EGTs dropped way more than I thought they would.
I was dealing with a truck that had high exhaust temps, so I tried a new brand of cetane booster, the one in the grey bottle from the parts store. After a full tank, the pyro showed a drop of almost 150 degrees on a steady pull. Has anyone else seen results this big from just an additive change?
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skylerw8726d ago
Hot take: Fuel matters more than people think.
That's a crazy drop, but it tracks. Low cetane fuel burns late and dirty, dumping heat into the exhaust instead of making power in the cylinder. The right additive just fixes the timing. I've seen similar on a tuned truck, just not that extreme. Makes you question what's actually in the pump.
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kai81826d ago
That grey bottle stuff is usually just a high concentration of 2-EHN, the same active ingredient in most boosters. A 150 degree drop is huge, it makes me wonder what junk fuel you were running before. Poor cetane can really make a diesel work harder, raising temps and hurting mileage. It's a good reminder that fuel quality isn't always a given, even from a name brand station.
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