Diamond Oil Company

USDOT activeAuthority activeCarrier & Shipper · InterstateHazmat

USDOT554371
MC383794
LocationDes Moines, IA
Phone(515) 244-4271
Fleet43 power units · 32 drivers

Diamond Oil Company (USDOT 554371, MC-383794) is an interstate motor carrier based in Des Moines, Iowa with 43 power units and 32 drivers reported to FMCSA. Its USDOT number and operating authority are active. FMCSA records list 6 roadside inspections in the last 24 months.

Verification snapshot · FMCSA data as of Nov 12, 2026

Operating authorityActive · MC-383794Carrier, Shipper Liability insurance$4,750,000 on fileRequired: $750,000 · as of May 2026 Safety ratingSatisfactoryRated May 30, 2019 Out-of-service ordersNone on fileFMCSA out-of-service orders file Registration (MCS-150)Updated Feb 28, 2024More than 24 months ago Process agent (BOC-3)On fileCt Corporation System

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Operating authority

Status from the FMCSA Company Census File, November 12, 2026

Docket	Authority type	Status
MC-383794	Contract carrier	Active

First granted on June 28, 2000 · see full authority history.

Insurance

FMCSA legacy licensing records (last updated May 2026); filings may have changed since

Liability (BIPD) required$750,000
Liability (BIPD) on file$4,750,000
Cargo insurance required / on fileNo / Yes
Bond required / on fileNo / No

Filings on file

Type	Insurer	Coverage	Effective
Liability (BIPD) BMC-91X	Emcasco Insurance Company	$750,000	Dec 1, 2023
Cargo BMC-34	Federated Mutual Insurance Co.	$0	Dec 1, 2001
Liability (BIPD) BMC-91X	Federated Mutual Insurance Co.	$4,000,000	Dec 1, 2001

Insurance history: 8 past filings

Type	Insurer	Effective	Ended	Reason
Liability (BIPD)	Employers Mutual Casualty Co.	Nov 1, 2019	Dec 1, 2023	Replaced
Liability (BIPD)	Emcasco Insurance Company	Dec 1, 2018	Nov 1, 2019	Replaced
Form 35	Great West Casualty Co.	Jul 23, 2002	—	Canc / cancl
Liability (BIPD)	Great West Casualty Co.	Jan 7, 2002	Jul 23, 2002	Cancel
Liability (BIPD)	Federated Mutual Insurance Co.	Dec 1, 2001	Dec 1, 2018	Replaced
Liability (BIPD)	Great West Casualty Co.	Sep 17, 2001	Jan 7, 2002	Cancel
Liability (BIPD)	Great West Casualty Co.	Jun 19, 2001	Sep 17, 2001	Cancel
Liability (BIPD)	Emcasco Insurance Company	May 1, 2000	Jun 19, 2001	Replaced

Process agent (BOC-3)

Ct Corporation System, New York, NY

Inspections and crashes

Last 24 months · FMCSA Vehicle Inspection File and Crash File

6
Inspections: 0.0%
Driver out-of-service: 50.0%
Vehicle out-of-service: 0
Crashes

Inspected most often in: Iowa (4), Nebraska (1), South Dakota (1).

Most recent inspection on file: July 18, 2025.

FMCSA safety rating: Satisfactory (rated May 30, 2019)

Inspection and crash counts come from FMCSA records and are shown as reported. They are not a safety rating. A crash record does not mean the carrier was at fault. FMCSA has not rated a carrier unless a safety rating is listed. For FMCSA’s own data and its explanation, see the FMCSA SAFER Company Snapshot.

Out-of-service rates are calculated by CheckTrucking from inspection records (driver: levels I, II, III, VI; vehicle: levels I, II, V, VI). They are not FMCSA scores.

Authority history

FMCSA licensing records (Motus and legacy L&I) · migration-only status adjustments are not shown

June 6, 2014Reinstated — Contract carrier authority
July 23, 2002Involuntary revocation — Contract carrier authority
June 28, 2000Granted — Contract carrier authorityRevoked on October 7, 2002

Fleet and operations

From the company’s own registration (Form MCS-150), updated February 28, 2024

Power units: 43
Trucks: 18
Tractors owned: 12
Trucks owned: 6
Trailers owned: 10
Drivers: 32
CDL drivers: 32
Interstate drivers: 4
Intrastate drivers: 28
Miles traveled: 1,200,000 (2023)
Classification: Private property; Authorized for hire
Hazardous materials: Yes
USDOT registered: March 23, 1994
Address: 702 SE Raccoon St, Des Moines, IA 50309
Phone (registered with FMCSA): (515) 244-4271

Cargo carried

Liquids / gases
Chemicals
Paper products
Agricultural / farm supplies
Scrap metal

Key facts

USDOT number 554371 was registered on March 23, 1994.
Operating authority MC-383794 was first granted on June 28, 2000.
The company last updated its FMCSA registration (Form MCS-150) on February 28, 2024.
It reported 1,200,000 vehicle miles traveled in 2023.
3 insurance filings are on file in FMCSA’s legacy licensing records (as of May 2026), including Liability (BIPD) coverage with Emcasco Insurance Company.
It had 6 roadside inspections in the last 24 months; 2 inspections recorded no violations.
Its most recent FMCSA safety rating is Satisfactory, issued on May 30, 2019.
Its process agent filing (BOC-3) is with Ct Corporation System.

Other carriers in Des Moines, IA

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