5.0 V8 Fueling and Efficiency Questions

[LR4Slavo]

Question for all of you 5.0 V8 owners out there: Is everyone putting in premium in their whips or is anyone using mid grade without any issues?

Also, what is your average fuel efficiency? This question stem last from deciding whether I send my injectors in for servicing.

I'm averaging about 16.5 mpg mixed between hwy and city with premium fuel.

 

[Winegrower]

I usually run regular in mine. I don't stress it and haven't experienced any issues. Average around 18mpg combined and 20 hwy here in the SW.

 

[ryanjl]

Gasoline to use

Hi I'm a novice car owner and i have a 2014 supercharged LR4 and i'm wondering as i see that it is recommended to use premium 93 octane gas but off the record is it really required? is 87octane or 89 octane okay to use?

www.landroverworld.org

Consensus is premium only. I mention it in the above thread, but there's a video on here somewhere that seems to be a presentation given by an expert on the JLR 5.0 engine to a room full of mechanics. He stated that using lower octane fuels is the cause of some problems in these engines.

 

[ryanjl]

I think this may have been the video, but I'm not sure:

 

[rolledover]

I'm averaging about 16mpg mixed driving using premium only. I just did head gaskets/timing and had the injectors cleaned 5k ago. I used Injector experts in OH and would highly recommend them, super quick turnaround time.

 

[greiswig]

I think this may have been the video, but I'm not sure:

Really informative video, regardless. And a little depressing. Wonder how much of what he said applies also to the SCV6?

 

[ftillier]

I use premium only. I wish I could get such high MPG, I get nowhere near that but drive mostly city, and hills. I think on the highway I get 17-ish.

 

[ftillier]

Oh, and the MFI reported mileage is wrong - I think it must be using UK gallons, not US gallons, as it always reports higher numbers.

 

[ryanjl]

Really informative video, regardless. And a little depressing. Wonder how much of what he said applies also to the SCV6?

I remember being glum after I watched it the first time, and I don't have the courage to watch it again.

Nonetheless, I am heartened by the number of high mileage LR4s that are appearing on the forums now and then. Mine has around 112k miles now, so it should have a long time left.

 

[f1racer328]

I think this may have been the video, but I'm not sure:

What an awesome video, and I love the fact that he recommends BG 44K.