What is MC number 667437?

MC number 667437 is assigned to Diamond Oil Field Services Inc, a registered motor carrier with the FMCSA under USDOT number 1582423.

Is Diamond Oil Field Services Inc Safe? DOT 1582423 – Safety Rating, Crashes & Violations

This carrier is active. Review the inspection and crash data below.

Diamond Oil Field Services Inc is a registered motor carrier with the FMCSA under USDOT number 1582423. The company operates from El Reno, OK and maintains an active operating status with 20 power units and 40 drivers on record.

Safety Rating

FMCSA Safety Rating

— Not Rated

No formal safety rating has been assigned to Diamond Oil Field Services Inc by the FMCSA. View official FMCSA record →

Inspection Summary

All-time Inspections

All-time

Total

OOS

Driver OOS

Vehicle OOS

18 inspections — relatively low volume, which may indicate a smaller or newer carrier.

OOS Rate0.00%

The out-of-service (OOS) rate represents the percentage of inspections that resulted in the carrier being placed out of service. This carrier has a 0% OOS rate — significantly better than the national average of ~21% for vehicles.

Crash History

Crash Records

All-time

Total

Fatal

Injuries

Tow-Away

1 crash recorded. Low count, but crash data should always be reviewed alongside inspection history.

Other Carriers in El Reno, OK

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Carrier Insight

Diamond Oil Field Services Inc is a medium-sized motor carrier operating in Oklahoma. With 18 total inspections on record, the carrier has an out-of-service rate of 0.0%, which is below the national average of approximately 21%. 1 crash has been reported. Review crash details alongside fleet size and inspection history before making hiring decisions.

Diamond Oil Field Services Inc has not received a formal safety rating from the FMCSA. This is common for smaller or newer carriers and does not necessarily indicate a safety problem.

The company operates 20 power units and employs 40 drivers. This is a mid-sized operation relative to the broader carrier market.

Frequently Asked Questions

What is USDOT Number 1582423?

USDOT number 1582423 is assigned to Diamond Oil Field Services Inc, an active motor carrier registered with the FMCSA, based in El Reno, OK.

How many inspections has Diamond Oil Field Services Inc had?

Diamond Oil Field Services Inc has recorded 18 total inspections with 0 out-of-service orders, representing an OOS rate of 0.00%.

Where is Diamond Oil Field Services Inc located?

Diamond Oil Field Services Inc is headquartered at 4201 S Radio Rd, El Reno, OK 73036.

What does "Not Rated" mean?

"Not Rated" means the FMCSA has not conducted a formal compliance review for this carrier. It does not indicate a safety problem — many active carriers operate without a formal rating.

Is zero crashes always a good sign?

Generally yes, but context matters. A carrier with zero crashes and very few inspections may simply have limited road exposure. Always review crash data alongside inspection volume and fleet size.

What is a normal OOS rate?

The national average vehicle out-of-service rate is approximately 21%. Driver OOS averages around 5%. Rates significantly above these thresholds may indicate recurring compliance issues.

How often is FMCSA data updated?

FMCSA publishes updated carrier data monthly. This page reflects the most recent available snapshot, updated on the date shown above.

What is the MC number for Diamond Oil Field Services Inc?

The MC number for Diamond Oil Field Services Inc is MC# 667437. The MC number is issued by the FMCSA and authorizes carriers to operate in interstate commerce.

Data sourced from the FMCSA Open Data Portal. Updated monthly. DOT# 1582423 · Last updated: 2026-03-09. View official FMCSA record →

Diamond Oil Field Services Inc (DOT# 1582423 · MC# 667437) – FMCSA Carrier Profile