Quijote
Full Access Member
Same here. Shell 93 nearly always. Sometimes Mobil1 or Sunoco as back-up.
Reliability
- Thread starter Rene Koesler
- Start date
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Same here. Shell 93 nearly always. Sometimes Mobil1 or Sunoco as back-up.
In tank pumps are common throughout the industry so I don't think ours are special. Perhaps LR sourced a different supplier on the newer models and the pumps are ****. Who knows? I did have one bank of injectors replaced (leaking) at about 50k miles and it happened during a trip through the NW states. Perhaps I inadvertently grabbed some low quality fuel. Who knows? These days I feel like I know very little.
Do you guys even drive your LR4s? I put 26k miles in 15 months and not a single issue until I had 200 miles left on my extended warranty, which was a faulty fuel pump. Replaced it at the Dealer in Nashville and also had my windshield cowl replaced.
I did all brakes and oil/fluid changes myself. Including brake fluid.
One of the best of the 14 vehicles I owned. Powerful, comfortable, capable and spacious.
I did all brakes and oil/fluid changes myself. Including brake fluid.
One of the best of the 14 vehicles I owned. Powerful, comfortable, capable and spacious.
f1racer328
Full Access Member
I bought my 2013 in October of 2018. Bought it with 42,000 miles, now I just ticked over to 67,000. Very few problems, tend to be ******* it as well (After all the fluids have warmed up)
Quijote
Full Access Member
I love the LR4 for what it is, but I prefer sporty cars if I am driving only (a few) people in good weather. For the first few years the LR4 was my daily driver, but my job was 5 miles away. Now it's in effect my wife's daily but the train station is 4 miles away. Even with 1-1.5k miles worth of road trips per year and other drives, it doesn't add up to that much. Also, for a while we had an electric leased car with way too many miles left on it, so we drove that a LOT for 2 years.
Houm_WA
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It absolutely matters. The mass of fuel around the pump lowers the equilibrium temperature of the contents of the tank, including the pump. That's just Thermodynamics.
You're saying a full tank of gas that's been sitting in a tank for a week is cooler than a 1/4 tank of gas? It doesn't make sense to me, but I'm not a thermodynamic engineer either. How much cooler, couldn't be more than a few degrees could it? Have you heard of pumps going out at a greater rate in the south than the north? I'm just skeptical of the statement that a fuel pump can't handle whatever extra temperature a 1/4 tank has is all.
Stuart Barnes
Full Access Member
Good morning all,
When the pump is running there will be a certain amount of heat soak into the fluid surrounding it, together with the cooling effect of the fluid passing through the pump and into the fuel system. In our case the fluid is petrol, or gasoline.
The gasoline is the cooling medium for the pump.
After a period of operation the temperature will rise, it's not a question of how long the gasoline has been in the tank but how long the pump has been in operation. This temperature rise is affected by the amount of gas in the tank and the load on the pump, governed by the fuel demand of the engine.
more gasoline = cooler pump
less gasoline = warmer pump
Now how much of a difference in temperature in the real world does this make? Be my guest and pick a number.
Bottom line, don't run the tank into the reserve / down to empty, and you should preserve the life of the fuel pump.
Ok, I'll get off my soapbox now.
Be safe and keep your tank full, you never know when you may need it
Stu.
When the pump is running there will be a certain amount of heat soak into the fluid surrounding it, together with the cooling effect of the fluid passing through the pump and into the fuel system. In our case the fluid is petrol, or gasoline.
The gasoline is the cooling medium for the pump.
After a period of operation the temperature will rise, it's not a question of how long the gasoline has been in the tank but how long the pump has been in operation. This temperature rise is affected by the amount of gas in the tank and the load on the pump, governed by the fuel demand of the engine.
more gasoline = cooler pump
less gasoline = warmer pump
Now how much of a difference in temperature in the real world does this make? Be my guest and pick a number.
Bottom line, don't run the tank into the reserve / down to empty, and you should preserve the life of the fuel pump.
Ok, I'll get off my soapbox now.
Be safe and keep your tank full, you never know when you may need it
Stu.
Stuart Barnes
Full Access Member
Yep. Generally they’re totally submerged units on most cars and trucks.
This is from the factory Maintenance documentation.
"OVERVIEW
The major components of the V6 3.0L SC (supercharged) fuel system comprises of a fuel tank, a fuel pump module, a fuel filler assembly and two fuel level sensors.
The V6 3.0L SC fuel system uses a returnless fuel system which comprises a fuel pump mounted in the fuel tank to deliver fuel at a variable flow and pressure to the engine mounted HP (high pressure) fuel pumps which supply fuel to the fuel rails and to all the fuel injectors."
This is from the factory Maintenance documentation.
"OVERVIEW
The major components of the V6 3.0L SC (supercharged) fuel system comprises of a fuel tank, a fuel pump module, a fuel filler assembly and two fuel level sensors.
The V6 3.0L SC fuel system uses a returnless fuel system which comprises a fuel pump mounted in the fuel tank to deliver fuel at a variable flow and pressure to the engine mounted HP (high pressure) fuel pumps which supply fuel to the fuel rails and to all the fuel injectors."
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