Hello!
I am embarking on an 8-day trip starting/ending at Seagull lake with 2 other friends. We will be using a Whisperlite Shaker Jet stove, and I'm trying to calculate about how much fuel we will need. We will be doing half dehydrated meals, half cooking meals for 5-10 mins (pasta, etc...). Has anyone done a similar trip with a whisperlite and have any suggestions?
Thank you!

I have a Whisperlite Shakerjet. Last year I did a test at home. I found I could boil 4 o cups of water in about 5 minutes, 30 seconds on average, and it would use close to 1 fluid oz of fuel or slightly more. I did this test outside in calm 70° air, with the side and bottom windscreens tightly fitting around the pot I used. Air temp, wind, specific pot, water temp, and possibly even fuel type could vary results. Your results could vary. I think it’s safer to assume 1.5 fluid oz of fuel per 4 cup boil. If you can, I strongly suggest you do your own test to see. It doesn’t take all that long.

Boiling pasta will vary depending on what type you use. Angel hair will take less time than fettuccini.

Hope that helps. Plan on some extra reserve in case of cold weather, wind, etc.

I have a Whisterlite and so does my buddy. On a three week trip (actually 19 days) in Ontario in 2017 we used his Whisterlite International and had 5 ltrs of fuel (white gas) and used about 4 ltrs. And we used the stove for the morning and evening meals. 10 or 11 evenings we had fish fries so we used the stove even more than just freeze dried evening meal nights. Take two or three ltrs and you should have plenty of fuel.

Fuel use is so dependent on the user and expectations of cooking, hard to take a guess.
My use is twice daily, boiling water for coffee and whatever I want for breakfast and dinner of a prepared meal, also solo use. Did an 11 day trip with 10 ounces of fuel and had some left over. I have found that fuel usage is very close between different stoves and comparable to canister isobutane on an ounce for ounce basis. Also will make use of a campfire if I feel like it for dinner.
A single 11 ounce fuel bottle of Coleman fuel or a 8 ounce canister of isobutane is my regular fuel supply for up to 11 days.
Lots of ways to stretch fuel used, a windscreen helps a bunch, pasta can be brought to a boil and set aside in an insulated container, meal planning and field prep can go a long way to minimizing fuel use.

butthead

If it were me, based on your parameters, I'd probably take 3x30 oz fuel bottles, so a total of 90oz of fuel. I'd fill two of the 30 oz bottles all the way to the top, and leave the one I'd use first filled to the "fill line." I'd transfer some out of the other two as the first bottle gets burned down. That'll let you squeeze in a bit more fuel than if you fill all 3 to the "fill line." If you run out of gas, there's always the fire :)

Here's MSR burn time and boil per volume fuel specifications. The version of Whisperlight was not mentioned, but I have and use old style standard Whisperlight/600 International, and have used a new Universal. All have similar fuel consumption.

butthead

I've taken many 8 day trips cooking on a whisperlite just for myself. I've always made it on one 20 ounce bottle with not much left at the end. Obviously you will use more fuel with 3 people but it probably won't be triple. I would take 40-60 ounces.

One thing you could do is measure (by weight or by volume) an amount into your fuel bottle. Use your stove to cook a pasta dinner for 3 tonight and then measure how much fuel you used. Then use that as a multiplier for a total amount for the trip.

So many variables to calculate correctly. I would suggest you actually cook an average meal and see how much fuel you use. You need to try to picture how you will use the stove. Breakfast cooking, coffee, any baking with a oven like a jello mold type, lunch soup, dinner boil and dump or actually cooking real food. Try to get a feel of the fuel usage. When you get a number in ounces , take 20% more. You also need to be aware or others in your group using the fuel. Are they leaving the stove run Needlessly after the water or food is cooked or has boiled?