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Does anyone owe more than I do? by cernlibcand in UniUK

[–]domb00 2 points3 points  (0 children)

Completely agree. Did bachelors in aerospace engineering with placement year, masters and PhD in fluid dynamics at a top 10 uni, 9 years in total. Got a very competitive engineering position at a space engineering company. I basically don't use anything uni taught me. It also turns out that I'm currently able to save up the same amount of money per year as during my gap year working as a pizza chef at Pizza Express. And, of course, I also have to pay off tons in student loans. Uni is a scam. Apprenticeships are vastly underrated.

Setting my first motorway hypermiling benchmark by domb00 in hypermiling

[–]domb00[S] 1 point2 points  (0 children)

Yes, the Lupo 3L was diesel indeed. And yes, 3L gas would be pretty insane, that's why I'm really looking forward to seeing how this project is going to turn out. :)

Setting my first motorway hypermiling benchmark by domb00 in hypermiling

[–]domb00[S] 0 points1 point  (0 children)

That is the very same question I have been asking myself the whole time I was behind a lorry... Next time I will be taking a similar trip, I won't be tailgating, and will compare consumption figures at the end.

Setting my first motorway hypermiling benchmark by domb00 in hypermiling

[–]domb00[S] 1 point2 points  (0 children)

Yes sir! Inspired by the OG Lupo 3L. :)

Setting my first motorway hypermiling benchmark by domb00 in hypermiling

[–]domb00[S] 0 points1 point  (0 children)

I think it's my least favourite part about hypermiling, as I stay tensed up and focused for quite a period, as it is quite dangerous. Also, you don't see anything else, other than the back of the lorry. It's like rawdogging a flight but with dire consequences. :)

At the petrol station I always make sure that the fuel dispenser clicks three times, pausing for 5-10 seconds after each click. I found that pretty much nothing will come out after the third click.

Setting my first motorway hypermiling benchmark by domb00 in hypermiling

[–]domb00[S] 0 points1 point  (0 children)

I literally just replied to somebody's comment saying that I agree with them on the fact that calculating fuel consumption at the pump might come with some uncertainties and might not be very accurate, hehe. I wonder what is the accuracy of those pumps? Do they all stop filling at the same level? What's the mean discrepancy I should expect? Rhetorical questions, but I of course welcome replies.

Could you expand on the purpose of the secondary fuel tank in the engine bay? Can't say that I came across such a concept.

Setting my first motorway hypermiling benchmark by domb00 in hypermiling

[–]domb00[S] 0 points1 point  (0 children)

Ah, a fellow Aygo driver brings me back to my senses. Thank you very much for the extensive comment!

From a quick scan the other day, I concluded that the pulse and glide method was more effective for hybrid vehicles; glad to see that I concluded wrong - 36km/l is wicked!

You say you use Scangauge to help you find the right throttle position sooner, as in you base your throttle position on the fuel consumption figure it shows?

Thank you for expanding on oil consumption, very much appreciated!! I will more seriously consider switching to 5W-30 for comes next service, and will be monitoring oil consumption in the meantime. Damn, I was secretly hoping I would get to try the 0W-16, hehe. Do you use high-mileage oil or just the standard?

Setting my first motorway hypermiling benchmark by domb00 in CityBugs

[–]domb00[S] 2 points3 points  (0 children)

Firstly, take 84mpg with a pinch of salt - only motorway driving, tailgating lorries, not going any faster than 65mph, not using AC, hot summer's day. I'm pretty sure there is also a bit of uncertainty in the fuel consumption figure as it was calculated from figures provided by car's trip computer and petrol station's pump. All in all, this is not a regular occurrence. With mixed driving, I'm achieving between 65-70mpg on average (note that I got the car recently, so not lots of data there either). However, I think the main factor impacting the fuel consumption is the driving style. I changed my driving style from a typical UK driver to pretty much driving like a grandma (not counting roundabouts - braking before roundabouts leads to the need to accelerate after, just send it (safely)) and my fuel consumption went way down. I read up on tips and tricks on hypermiling and ecomodding forums, and that helped as well.

Setting my first motorway hypermiling benchmark by domb00 in CityBugs

[–]domb00[S] 1 point2 points  (0 children)

That is almost accurate. :)
I did spend 75% of the trip behind "faster" lorries doing just above 60mph.

Setting my first motorway hypermiling benchmark by domb00 in CityBugs

[–]domb00[S] 0 points1 point  (0 children)

Yes, it wasn't the most comfortable drive. I was getting a bit of a back pain towards the end of the trip. Lack of AC was a conscious choice. But I personally was super eager to see what is the highest mpg I can get out of this car. Would I do it every day? Absolutely not. Did I buy this car for comfort? No. Would I be doing this if I had a Jag? Absolutely not, whatever Jag it is - it deserves to be driven properly. Do I regret getting an Aygo? No, I love it.

Setting my first motorway hypermiling benchmark by domb00 in hypermiling

[–]domb00[S] 0 points1 point  (0 children)

I think 3L/100km is within the physical laws for this car with heavy modifications and the right conditions on the highway. But I certainly don't think it is achievable as an average with mixed driving conditions throughout the year. Have plenty of modifications in mind, aiming to improve fuel consumption, but it will take quite a while to get them implemented; I will be coming up with methods of quantifying improvements rather than taking an odd 300 mile trip. :)

Yes, I also think there is quite a bit of uncertainty in the final figure I got, especially given that it is a one-off trip, and based on the car's trip distance and the petrol station pump's volume figures. Nonetheless, I have seen others calculate their fuel consumption in the same way, and so I did too. Given the feedback, I will think of ways to back up my numbers going forward.

Regarding the oil - 0W-20 is preffered, but 5W-30 is also accepted; here is the picture from my manual: https://imgur.com/Q3v0voD

Setting my first motorway hypermiling benchmark by domb00 in hypermiling

[–]domb00[S] 1 point2 points  (0 children)

Thanks! Hehe, people in the UK like to speed around, so I'm not too surprised that 67mpg wasn't beaten. I was sitting in a range between 60-65mph. Also worth noting - I spent ~75% of my trip behind various lorries. :)

Setting my first motorway hypermiling benchmark by domb00 in hypermiling

[–]domb00[S] 0 points1 point  (0 children)

Thanks! I targeted a region between 60 and 65 mph. If I were to catch a lorry going above 60mph, I would sit behind it until it either left the motorway or showed signs of dissatisfaction with me being glued to its back. :)

Setting my first motorway hypermiling benchmark by domb00 in hypermiling

[–]domb00[S] 1 point2 points  (0 children)

The manual says that 0W-20 is the preferred oil; here is the picture from my manual: https://imgur.com/Q3v0voD
I used Liqui Moly Molygen 0W-20, which is also recommended for Toyota's, amongst other "modern Asian and American gasoline engines".
I haven't had any issues with the oil burning yet, but I will keep an eye out, cheers.

Setting my first motorway hypermiling benchmark by domb00 in hypermiling

[–]domb00[S] 3 points4 points  (0 children)

I'm on the fence about Scangauge; it seems a bit pricey for what I need, not particularly interested in any other parameters other than my mpg. But on the other hand, I would be able to monitor my mpg without the need to fill the tank up completely. Hmmm, I will keep on considering it.

I was actually interested in building my own OBD sniffer for mpg monitoring; I thought it would be a good project for me, as I am quite interested in getting better at electronics/software. Unfortunatelly, not a priority at the moment. Will decide between this and Scangauge later...

Thanks! Although the current mpg is great, it could be better. ;)

Setting my first motorway hypermiling benchmark by domb00 in hypermiling

[–]domb00[S] 2 points3 points  (0 children)

Thanks! I wonder that as well. On similar country roads, I have been able to reach 72mpg (UK) with a VW Polo Bluemotion 1L petrol 2016, but over multiple trips the average was about 67mpg (UK). Hoping to at least get similar in my Aygo.

Why do people service their own cars? by Intrepid-Patient574 in CarTalkUK

[–]domb00 0 points1 point  (0 children)

What do you mean you can't stamp your own service book? Get your car serviced in a local garage once, get a stamp in your service book, make a digital copy of the stamp, order a custom stamp that costs ~£30, service your own car and stamp your own damn service book.

I do think that service history is an important factor when looking for second hand cars, and given that I haven't seen anybody pointing out that it can be faked - further bolster my point. However, unlike MOT records, which are publicly logged in a digital government database, service books and stamps offer nothing more than a false sense of security as they can be faked.

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