Gas Grade and Brand
TReK
Joined: Oct 2007
Posts: 2,773
Likes: 1,982
From: Whidbey Island, PNW
Nope, mine pops out like a spring too.
Mine is like this, but if I tuck the stem bend the cap, it stays in its place every time.
Recovery Vehicle
Joined: Apr 2019
Posts: 959
Likes: 214
From: Ottawa, Canada
Actually... highest octane but this is essential:
https://www.toptiergas.com
What is interesting that in Canada, Costco adds more detergents then Shell... and its the same fuel truck that stops at both stations...
Go figure.
As for choosing an octane less then suggested... good luck with that. In time it will start to have effect.
https://www.toptiergas.com
What is interesting that in Canada, Costco adds more detergents then Shell... and its the same fuel truck that stops at both stations...
Go figure.
As for choosing an octane less then suggested... good luck with that. In time it will start to have effect.
Last edited by guy; Jan 9, 2025 at 07:01 PM.
4wd Low
Joined: Mar 2025
Posts: 14
Likes: 8
From: Calgary, Alberta, Canada
I’ve experimented with running on 89 lately and have noticed no knocking, no loss of power, no loss of fuel economy. This includes a lot of highway driving in the mountains, including over 1,300m (4,300ft) elevation.
Rock Crawling
Joined: Jan 2023
Posts: 416
Likes: 140
From: North of Toronto
Actually... highest octane but this is essential:
https://www.toptiergas.com
What is interesting that in Canada, Costco adds more detergents then Shell... and its the same fuel truck that stops at both stations...
Go figure.
As for choosing an octane less then suggested... good luck with that. In time it will start to have effect.
https://www.toptiergas.com
What is interesting that in Canada, Costco adds more detergents then Shell... and its the same fuel truck that stops at both stations...
Go figure.
As for choosing an octane less then suggested... good luck with that. In time it will start to have effect.
Recovery Vehicle
Joined: May 2017
Posts: 1,135
Likes: 824
From: Boston, MA
IMHO, if you can afford to buy a Defender, you can afford to put the correct octane fuel in it.
Three Wheeling
Joined: Jan 2023
Posts: 69
Likes: 78
First. I use the Chevron Rewards app on my iPhone. At my rate of usage it drops the price of premium down to the price of regular. Usually about $0.40/gal.
Second. The old school adage of lowering the octane level til it knocks doesn’t work for these engines. The ECU is monitoring your O2 levels and will de-tune all your timings (spark and cams) to accommodate low grade fuel. In my case, P300, I have a 2 liter engine ( 125 cu/in.) that can generate 300hp when asked. That’s remarkable! I give it the highest quality gas I can find.
Second. The old school adage of lowering the octane level til it knocks doesn’t work for these engines. The ECU is monitoring your O2 levels and will de-tune all your timings (spark and cams) to accommodate low grade fuel. In my case, P300, I have a 2 liter engine ( 125 cu/in.) that can generate 300hp when asked. That’s remarkable! I give it the highest quality gas I can find.
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TRIARII
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May 25, 2014 09:00 AM