What Monday's oil drop actually means for a trucker, a plow crew and a bakery paying $6.35 diesel

Oil fell hard on Monday morning. OilPrice.com reported, citing Reuters, that a draft proposal to end the U.S.-Iran war is being circulated after Iranian negotiators left Qatar, and that Iran says the Strait of Hormuz could reopen within two days if its demands are met. Iran's foreign ministry also said no final agreement can happen while the U.S. naval blockade continues. ING's strategists told clients it "remains to be seen whether this will lead to anything." This is hope, not a deal.

West Texas crude was about $97 to $98 a barrel late Monday morning, depending on the feed: $97.19 on Yahoo Finance's front-month contract and $98.35, down 5.7% or $5.93, on our markets board. Friday's close was $104.12. For a business that runs on diesel, the question is how much of that reaches the pump and when.

The number behind the oil price

A barrel holds 42 gallons. A $5.93 drop in crude is about 14 cents a gallon ($5.93 divided by 42), and that is the most it can take off the cost of a gallon of fuel if every cent passed through. It will not all pass through, and not quickly. The U.S. Energy Information Administration's weekly survey had on-highway diesel at $6.352 a gallon on Oct. 26, up 7.6 cents on the week and about $2.63 above a year earlier (roughly $3.72 then, our subtraction). Regular gasoline was $4.269. The next EIA reading is Nov. 3 and will not show Monday's drop.

The floor matters too. As our pre-market brief reported, Goldman Sachs raised its December Brent forecast to $105 from $90 and WTI to $94. A fall to $97 still leaves crude above that level, so even good news from Doha leaves fuel expensive.

What it does to three fuel bills

The gallons below are examples. Swap in your own.

Business	Example use	Annual fuel at $6.352 (or $4.269)	Same use a year ago	If all 14 cents passed through
Owner-operator trucker	100,000 miles at 6.5 mpg = 15,385 gallons of diesel	$97,700	$57,200	$2,150 saved
Plow crew	4 diesel trucks, 40 gallons each per storm, 15 storms = 2,400 gallons	$15,200	$8,900	$340 saved
Bakery with two gasoline vans	36,000 miles at 15 mpg = 2,400 gallons of gasoline	$10,200	$7,300	$340 saved

Year-ago figures subtract EIA's reported year-over-year change from the Oct. 26 prices ($3.718 diesel, $3.035 gasoline). Our arithmetic.

The trucker is the one most exposed. The fuel bill is $40,500 higher than the same miles cost a year ago, so a 14-cent move is about 5% of that gap. If you haul on a fuel-surcharge schedule, the surcharge usually follows a published average with a lag, so you may give back a cut before you feel it. Read your schedule: if it resets weekly off a government index, the Nov. 3 and Nov. 10 readings are what matter, not the futures screen.

The plow crew bought its season in October. A contract priced when diesel was near $3.72 now carries about $6,300 of extra fuel on those 2,400 gallons, and a 14-cent relief is $340 of that. If your contracts have no fuel clause, this week is the time to add one for renewals. Snowfall, not oil, will decide the total, since gallons scale with storms.

The bakery burns less fuel than either, so the van bill is not the story. The cost that moves is its suppliers' delivery surcharges on flour, dairy and packaging, which follow diesel. Ask each supplier whether the surcharge is indexed and how often it resets; a surcharge that goes up in a week and comes down in a quarter costs real money.

What to do

For most owners the right move is to do nothing with prices or fuel contracts today. A single morning's drop tied to a draft proposal that Iran has attached conditions to is a poor reason to lock in a fuel price or cut a customer's surcharge. What is worth doing this week: write down your gallons per month, find out which index each surcharge follows and when it resets, and check the EIA release on Tuesday to see whether pump diesel turns down at all. If it does, ask for the surcharge reduction in writing. If the talks collapse over the weekend, as ING noted many of this conflict's turns have, your fuel cost will go back up on the same schedule.

Independent operators in these trades are numerous:

24,679 independent trucking and freight are listed on CheckThisBiz, a directory of 7,704,724 independent US businesses, including 2,868 in TX, 2,828 in CA, 1,916 in FL. Chains and franchises are excluded from that count, so these are the owner-operated businesses that actually apply for funding.

See the trucking operating playbook for how owner-operators handle fuel.

Related: crude oil chart, our Oct. 23 look at $116 Brent and diesel, markets.

Sources: OilPrice.com citing Reuters; U.S. Energy Information Administration; Yahoo Finance; Chronicle markets board. This is market information, not investment advice.