Lots of things affect turbo spool time, but fuel type isn't really one of them. Your 2.7L engine has two much smaller turbos that are mounted on the exhaust manifold. The EcoDiesel has a much larger turbo that's tucked in behind the engine valley, and this larger turbine has a much greater distance to the exhaust ports feeding it.

 

Well it takes quite a bit more air per hp for a diesel compared to a gas engine so it takes longer to build enough boost to build power. Transient response on a gas engine is significantly better than diesel for this reason. Bottom line is that a 3.0l diesel is marginal for a 6k lb truck. It works a lot better in a 4K lb SUV.

 

I've never really researched the Eco-Diesel, is it also twin turbo?

 

Single Garrett VGT.

Back when I was an oil/lube service tech at a chain, a guy brought in a Jeep Grand Cherokee EcoDiesel for an oil change and needed the TPMS light reset. Had to drive it about 10 miles to get it to reset and I was thoroughly impressed by it. Granted it's lighter than the 1500, but still had good throttle response.

The owner was shocked when there wasn't any leftover​ oil from the oil change. He didn't know that it held 10qts of oil being a 3.0L.

 

Really hope you didn't put 10 quarts of oil in. The EcoDiesel only takes 8 quarts in the Grand Cherokee.

 

thanks...

 

Maybe he brought two 4qt jugs it's been a few years so my memory is foggy.

 

Daily occurrence with me!

 

I'm very interested in a diesel option, but of course it would have to be priced right. The 3.5L EB in my last two trucks made far more power than they needed, even with ~12,000 lbs behind them. I like an engine with a strong torque curve so it doesn't shift around, but I could do with 100 less horsepower up top in exchange for a substantial increase in fuel economy.

I rolled a quarter of a million miles in a past life driving semi trucks. Up to 80,000 lbs with a whopping 435 HP...going below the speed limit up a hill doesn't really bother me.

 

How substantial does the fuel economy increase have to be over your EcoBoost before you'd make the switch?

 

That would be dependent on the upgrade cost. I'd spend another $3-4K to gain 20% in fuel economy, assuming I was satisfied that the engine had decent reliability. Such an engine would hold its value well in the used market unless it was a known lemon.