Does my 2014 Jeep Grand Cherokee Limited heat the diesel fuel & lines, or just heat at the fuel filter? Reason I ask is because I'm trying to run out my #2 diesel and the temp. here is dipping below +20 degrees F. SUV sits in a heated garage overnight(@+55) and my only concern is on the highway or when engine is off at work. Thanks.
If you're concerned, you can always drop in some Power Service Diesel Fuel Supplement cetane boost/anti-gelling product (the white bottle, not the silver). My WalMart has it for about $6 for 16 oz, which should treat two full tanks. Then you don't have to be worried about trying to rapidly burn off your tank of fuel.
I have been considering carrying some Diesel 911, but I think that it's a long shot to be a concern in my area because the service stations all switch to winter blend with sufficient #1 to avoid gelling. (Overpreparedness? What can I say? The Boy Scout motto dies hard.)
FWIW—and someone please correct if I'm wrong—but I thought the fuel pump system circulated the tank contents up to the engine for heating so that gelling is extremely unlikely while the vehicle is at operating temperature and underway. But, like I said, maybe I hallucinated that.
I didn't have any issues last winter with mine sitting out in an open (unheated) parking lot all night, and unheated parking garage during the day at work. We were below 20 for a good amount of time.
Howdy. Very little heat is rejected to the fuel on a common rail system like the one our 3.0 engines have. This is actually a good thing, as warm fuel in the tank promotes condensation which leads to water in the fuel. It also eliminates the need for a fuel cooler.
With temps in the upper teens or lower 20s, and keeping inside a warm garage at night, you will not have any issues.
No additives. Sat outside for 10 hours, and when I went to start it, it was -26. The remote start won't work when it is that cold, because the remote start disables itself if it doesn't start on the first crank. But it started manually fine. Lots of creaks and moans, but started and ran fine.
That's impressive. You didn't even plug the Jeep in to 120V? I live just across the border in WI and have the same temps as you so this is nice to know. I have a heated garage I keep my Jeep in though. Thanks for the info.
I was a little nervous when it got that low, but did not have access to plug it in while at work. Hopefully this winter is more kind to us, but so far it is starting out with a bang. -1 here tonight.
I had no issues last winter as well. I can't plug in at work and there were many nights where it was -10F to -15F. Like Shannon said, the remote start gets iffy really low, I think it didn't start on me once.
For piece of mind I added XDP Polar-D which is an anti-gel/cetane booster during the winter and never had an issue. Our pumps run #2 from November to March.
The worst case that Ive seen for cold starting was when I went to test drive an ecodiesel. It did not snow here ofor about 2 weeks and the temps did not go higher than -15 degree c, and the sales person got into the jcg and it started with only one crank. As I said it did not snow but the jcg was under about a foot of snow, so it did not move for a while.
Uh, I guess it pays to check. I stopped at a BP in Nebraska the other day and the attendant was quite positive that what was dispensed was straight #2 and not a winter blend. At another station a few miles down the road the attendant said their auto diesel pump dispensed straight #1, which is totally unnecessary there. I refueled at the next station where the attendant had never heard of winter blend and mumbled something about #2 in the pump.
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