Gas ⛽️

[MindMechanic]

So what brand gas are you guys pumping?

Petro 94? Shell VPower?

Notice different mileage patterns or performance?

Would love to know.

This is my first turbo car and I want to be smart and efficient yet enjoy the power too!

 

[KDX]

I intend to run premium in mine. That being said....at the 21:00 minute mark in this video he says that it will run perfectly fine on regular.

 

[EdP]

This is my first turbo car and I want to be smart and efficient yet enjoy the power too!

You can run on regular but may see a slight difference with premium. I'd not worry about it until you have 1000 km or so to be sure you are broken in for max performance. . Try a tank of each and see how it works for you. The difference may not be that noticeable but the cost will be.

Make sure you use a full synthetic oil too.

 

[MindMechanic]

Woah... you can run on regular? This I didn’t know. I made this post as I was trying to distinguish between the various brands, not octane levels.

I’m over 1000km now and best I’m getting is around 13-13.5 L/100km. I do mostly city driving.

Okay so questions I have now are:
1. Do brands actually matter? Shell vs Petro vs Esso? Then there are the small chains like pioneer and husky.... assuming same octane.

2. I would imagine lower performance with lower octane (like regular 87) but what about mileage? I thought engines are tuned to be most efficienct using the recommended octane level. Meaning while I might save dollars at the pump those savings will be offset by the decrease in mileage. Or is this untrue?

3. Regarding lower performance, how much of a hit are we talking about?

4. I’m guessing best is probably as said above, try with the different options and see the results you get. Should I run a few tanks with each option to get a proper baseline? Or are single tanks tests good enough?

5. And finally are we sure that regular is okay? Manual states 91 and does not state that lower is okay.

Thanks!

 

[EdP]

Woah... you can run on regular? This I didn’t know. I made this post as I was trying to distinguish between the various brands, not octane levels.



Okay so questions I have now are:
1. Do brands actually matter? Shell vs Petro vs Esso? Then there are the small chains like pioneer and husky.... assuming same octane.

5. And finally are we sure that regular is okay? Manual states 91 and does not state that lower is okay.

If the manual states 91. that is best for you. As for brands, I've never noticed any difference. Most are selling the same gas from a particular refinery and use different additive packages. Stick with top tier and you should be ok

 

[Mark_888]

If the manual states 91. that is best for you. As for brands, I've never noticed any difference. Most are selling the same gas from a particular refinery and use different additive packages. Stick with top tier and you should be ok

Correct. There should be no immediate difference in performance between top tier and not top tier. Performance depends on octane rating, if an engine is designed and tuned to use a higher octane gas and take advantage of it. Some engines are designed (specifically the Genesis 5.0 V8) to use multiple octane ratings, and take advantage of higher octane with better performance when higher octane is present, but still work OK with regular gas.

Top Tier determines whether the gas has proper levels of detergents to keep the inside of engines and valves clean from carbon deposits. Obviously, over time, that would affect engine performance, but not immediately.

 

[GenesisYEG]

The G70 will run regular gas with a slight horsepower penalty but most people's butt dynos probably wouldn't even notice so go ahead and use 87 if you want to save some money. I haven't used Shell V-Power in my G70s yet (my company fuel card is for Hughes) but I've always had the best mileage with Shell V-Power in my personal car as V-Power in Alberta has no ethanol in it.

 

[KDX]

Woah... you can run on regular? This I didn’t know. I made this post as I was trying to distinguish between the various brands, not octane levels.

5. And finally are we sure that regular is okay? Manual states 91 and does not state that lower is okay.

Thanks!

Watch the video in the link posted above (21:00 minute mark). That is a Genesis Canada rep saying that it's OK.

 

[GenesisYEG]

100% true that regular is okay to use for the G70.

 

[MindMechanic]

suhweet! okay, will make some logs with 87 and report back on noticeable performance and fuel mileage.

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[Edmguy]

I have only ran 91 octane on mine so far. Of the 5 tanks so far, 4 have been from co-op and 1 from Shell. I typically gas up with co-op as there is a location a few blocks from my house. They have top tier gasoline which is enough for me.

Back in the days I had a modified car I used to always go with Shell and I will still choose Shell if given the option but again since the co-op is right by my house I end up gassing up there 90+% of the time.

 

[MindMechanic]

I have only ran 91 octane on mine so far. Of the 5 tanks so far, 4 have been from co-op and 1 from Shell. I typically gas up with co-op as there is a location a few blocks from my house. They have top tier gasoline which is enough for me.

Back in the days I had a modified car I used to always go with Shell and I will still choose Shell if given the option but again since the co-op is right by my house I end up gassing up there 90+% of the time.

what's your mileage been like?

 

[devellis]

2. I would imagine lower performance with lower octane (like regular 87) but what about mileage? I thought engines are tuned to be most efficienct using the recommended octane level. Meaning while I might save dollars at the pump those savings will be offset by the decrease in mileage. Or is this untrue?

If you do the math, in most real-world scenarios the difference in price between gas grades will exceed the cost advantage of getting better mileage. I'd be surprised if you got more than a 2 MPG benefit from using a premium grade. That's about a 10% improvement based on an overall combined MPG of 20. Gas prices here are about $3.50 for premium and about $2.80 for regular. That $0.70 difference is a 25% increase for premium fuel. So, if you pay 25% more to get a 10% benefit in mileage, that's still a loss. Of course mileage differences and gas prices will vary from situation to situation but I still think that, if saving money is your primary motivation, using regular will likely cost less than premium.

Personally, I'd just spring for the premium, as I do with my present car. For the amount of driving I do, the extra yearly cost of using premium is completely acceptable. If you drive 10,000 miles a year and if you get the combined 20 MPG, that's 500 gallons of gas per year. If regular is $2.80, that's $1,400 in gas per year. If premium is 25% more, that's a $350 difference. I actually drive more like 5,000 miles per year in my car (my wife and I are both retired and our total driving is largely both of us in one car rather than each of us in a separate car, with no commutes to work), the difference is $175. That's not a large "penalty" to my mind for getting a bit more performance and peace of mind. And as a reference point, my brother has a turbo Mazda that can run on regular or premium and Mazda lists the horsepower difference at 23HP. So, perhaps not entirely trivial. In the case of my brother's car, the horsepower goes from 227 with regular to 250 with premium -- a 10.13% increase. A comparable drop (9.2% going from the higher to the lower value) for the 365 HP G70 would bring it down to 331.4 HP (essentially splitting the difference between the power of the 3.3 and 2.0 engines). All of these extrapolations are a bit iffy, I realize, but they provide us a ballpark figure for the benefit of using premium.

Of course, which gas you use isn't an all-or-none proposition. It may well be that people switch between the two depending on pricing and the type of driving they're doing. If pulling off the interstate gets you to a place with premium gas prices at or beyond $5.00 per gallon (something I've seen in recent years that we might see again in the future), then sacrificing the extra HP to save a substantial amount would make sense. Get back to your local station with reasonable prices when you want to take the car for a spirited jaunt or plan to take the family-plus-luggage on a trip through hilly terrain, and springing for premium may make a good deal of sense.

 

[Mark_888]

If you do the math, in most real-world scenarios the difference in price between gas grades will exceed the cost advantage of getting better mileage.

You are probably correct. But the same could be said about the extra price of buying a high performance car or high power engine option in the first place, compared to the small increase in performance, which 99% of the time cannot even be used outside of a race track.

 

[Edmguy]

what's your mileage been like?

I do more freeway than city most of the time and I have had as low as 9.8L/100km on a tank and as high as 11.5L/100km. On my drive to work which is before 7am with light traffic and mostly freeway, I can average mid 8's for the almost 45km trip. But then heavier city driving and I will be in the 15's easily if I get the chance to use the go pedal more often.

I do want to point out that I have found the G70 to be like every other car I have ever owned in the sense that it likes to post a very optimistic mileage. For instance, my last tank that the car showed 10.8L/100km, which was for driving 426km with the engine running 8hrs and 10min.

My fill last night was for 51.375 liters at $1.4999 for a total of $77

That works out to 12.1L/100km. The tank before this was a little closer, but the car still seems to overstate by about 1L/100km. I don't know why most cars seem to do that, but I have found that to be the case with every car I have owned since they started tracking this in the cars.

Probably worth noting I am up to 2,316km on the car now

 

[devellis]

You are probably correct. But the same could be said about the extra price of buying a high performance car or high power engine option in the first place, compared to the small increase in performance, which 99% of the time cannot even be used outside of a race track.

Oh, I agree entirely. Getting a higher-performance car and paying a bit more for gas that will optimize its performance is much more about emotional factors than it is about a hard dollars-and-cents calculus. Personally, I'm all for faster cars running on premium fuel (at least some of the time) but I recognize that that's not a choice everyone would make and isn't entirely rational. But then, a G70 isn't likely to be a car that people concerned exclusively with a rational assessment of the least expensive mode of transportation are likely to be considering. For me, if anything, the G70 may be on the "more rational" end of the range of cars I'm thinking about at this point.

 

[KDX]

I do more freeway than city most of the time and I have had as low as 9.8L/100km on a tank and as high as 11.5L/100km. On my drive to work which is before 7am with light traffic and mostly freeway, I can average mid 8's for the almost 45km trip. But then heavier city driving and I will be in the 15's easily if I get the chance to use the go pedal more often.

I do want to point out that I have found the G70 to be like every other car I have ever owned in the sense that it likes to post a very optimistic mileage. For instance, my last tank that the car showed 10.8L/100km, which was for driving 426km with the engine running 8hrs and 10min.

My fill last night was for 51.375 liters at $1.4999 for a total of $77

That works out to 12.1L/100km. The tank before this was a little closer, but the car still seems to overstate by about 1L/100km. I don't know why most cars seem to do that, but I have found that to be the case with every car I have owned since they started tracking this in the cars.

Probably worth noting I am up to 2,316km on the car now

I had a 2013 Santa Fe Limited and it was consistently 1 liter too optimistic in fuel usage. IE, if it said 10l/100kms, it was actually 11l/100kms.

 

[Edmguy]

I had a 2013 Santa Fe Limited and it was consistently 1 liter too optimistic in fuel usage. IE, if it said 10l/100kms, it was actually 11l/100kms.

I just gassed up my Grand Cherokee last night and it said 11.8L/100km for the tank. Actual was 88.871 liters to drive 694km so 12.8L/100km. So off as well.

Worth noting that the mileage on a Jeep Grand Cherokee with the 5.7L V8 is not much worse than on the G70 lol Again the only part that bothers me is the range on the G70 due to the small tank. I can do 800km on a tank with the Jeep but don't think I will ever get more than about 550km on the G70.

 

[larrymg1]

Top Tier determines whether the gas has proper levels of detergents to keep the inside of engines and valves clean from carbon deposits. Obviously, over time, that would affect engine performance, but not immediately.

Any station whose pumps designate they are Top Tier Gasoline, IMO, is as good a quality as any name brand.

 

[PMCErnie]

Costco regular is Top Tier.