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CHAMBERLAIN OIL CO INC
Clontarf, MN
CarrierChk vetting signal
No flags raised
Authority, insurance, safety rating and crash records checked
FMCSA status: Active & Authorized · DOT 130174 · MC 199803
Satisfactory
Active 39 yrs, 3 mo
Broker Vetting Summary
Key signals from current FMCSA records
Authority
Active
MC-199803 · Common carrier
Insurance
On File
Federated Mutual Insurance Co.
Safety
Satisfactory
5.6% OOS · 33 inspections on record
✓ No risk flags found on authority or insurance records
Vetting notes
- Operating authority active for 39 yrs, 3 mo
- Insurance on file: $1,000,000
- FMCSA safety rating: Satisfactory
- Vehicle out-of-service rate 11.1% — below the 20.7% national average
- 33 FMCSA inspections on record
Authority & Compliance
Authority, insurance and required filings
Operating Authority
MC199803
Contract Carrier
Insurance on File
FEDERATED MUTUAL INSURANCE CO.
BI&PD · $1,000,000 · Policy 0971560
Required Filings
Liability (BIPD)
$1,000,000
Company Information
Registration, contact and cargo details
FMCSA Registration
DOT Number
130174
MC Number
MC-199803
Safety Rating
Satisfactory
Entity Type
Corporation
Operation Classification
Authorized for hire, Private (property)
MCS-150 Filed
May 6, 2025
FMCSA Registration
June 1, 1974
Authority Granted
June 16, 1987
Annual Mileage
893,000 mi (2024)
Contact Information
Address
112 Grace Ave E, Clontarf, MN 56226
Phone
Email
Owner / Officer
Andrew Rentz
Officer 2
John Chamberlain
Cargo Types
General FreightLiquids/Gases
Safety Snapshot
Out-of-service rates, violations and crashes
Safety & Inspection Summary
Total Inspections
33
Driver Inspections
27
Vehicle Inspections
16
Out-of-Service Violations
4
Violations by Category
Vehicle Maintenance23
Unsafe Driving5
Hours of Service10
OOS Rates vs. National Average
Driver OOS Rate0.0% · national avg 5.5%
✓ Below national average
Vehicle OOS Rate11.1% · national avg 20.7%
✓ Below national average
5.6% of 18 inspections in the last 24 months put a driver or vehicle out of service —
14th percentile among carriers with 10–24 inspections (lower is better).
CarrierChk calculation from FMCSA roadside inspection records, not an FMCSA score.
Inspection Trend by Year
2026
2025
2024
Violation Rate by Category
Share of roadside inspections in FMCSA's rolling 24-month window that found a violation in each category. The individual violations are listed under each inspection in Inspection Details below. None of this is the basis of the safety rating, which comes from an on-site compliance review.
Vehicle Maintenance
9 of 11 inspections
Unsafe Driving
2 of 20 inspections
Hours of Service
2 of 20 inspections
Driver Fitness
0 of 20 inspections
Controlled Substances
0 of 20 inspections
Fleet & Operating Areas
Observed roadside activity and equipment
Where This Carrier Operates
States where this carrier's roadside inspections were recorded
FewerMore
MN10
SD9
MT4
WI4
IA1
Fleet & Equipment (28)
Vehicles identified in this carrier's inspection history. Year, make, model and equipment type are decoded from the VIN.
Power units
~13
of 19 reported to FMCSA
Trailers
~15
seen at inspection
Equipment types observed
Tractor
12
Dry Van
9
Tank
4
Semi-trailer
2
Truck
1
Units on record
| Vehicle | Type | VIN | Inspections | With OOS |
|---|---|---|---|---|
| 2023 Great Dane Trailers | Dry Van · 48 ft | 1GR1A9622PB444919 | 4 | — |
| 1998 Polar Tank Trailer | Tank · 43 ft | 1PMA2432XW5001330 | 4 | 1 |
| 2025 International LT62F | Tractor · Class 8 | 3HSDZAPRXSN696966 | 4 | 1 |
| 2022 Volvo Truck VNL | Tractor · Class 8 | 4V4NC9EH1NN298038 | 4 | — |
| 2023 Volvo Truck VNL | Tractor · Class 8 | 4V4NC9EH4PN615054 | 3 | — |
| 2022 Utility Trailer Manufacturer | Dry Van · 48 ft | 1UYVS2484N3678401 | 2 | — |
| 2018 Freightliner M2 | Truck · Class 6 | 3ALACWFC8JDJM5820 | 2 | — |
| 2025 International LT62F | Tractor · Class 8 | 3HSDZAPR8SN357851 | 2 | — |
| 2023 Volvo Truck VNL | Tractor · Class 8 | 4V4NC9EH0PN615083 | 2 | 1 |
| 2019 Volvo Truck VNR | Tractor · Class 8 | 4V4WC9EH7KN199059 | 2 | — |
Show all 28 units
| Vehicle | Type | VIN | Inspections | With OOS |
|---|---|---|---|---|
| 2016 Vanguard National Trailer Corporation (vntc) | Dry Van · 36 ft | 5V8VA3620GM602698 | 2 | — |
| 2024 Wabash Tanks DOT/TC Specification | Tank | 10BAAB231RF416864 | 1 | — |
| 2004 West-mark Certified Stainless Services, Inc dba West-Mark | Tank · 40 ft | 16WTE40274A134818 | 1 | — |
| Great Dane | Semi-trailer | 1GR1A7620PB444938 | 1 | — |
| 2020 Great Dane Trailers | Dry Van · 48 ft | 1GR1A9628LT154530 | 1 | — |
| 2013 Wabash Vans Dry Van Duraplate | Dry Van · 53 ft | 1JJV532D0DL737087 | 1 | — |
| 2022 Polar Tank Trailer | Tank · 44 ft | 1PMKA4424N7117180 | 1 | — |
| 2020 Utility Trailer Manufacturer | Dry Van · 40 ft | 1UYVS2405L3882504 | 1 | — |
| 2023 Utility Trailer Manufacturer | Dry Van · 42 ft | 1UYVS242XP3728703 | 1 | — |
| 2022 Kenworth T880 | Tractor · Class 8 | 1XKZDP9X5NJ480546 | 1 | — |
| 2017 Freightliner Cascadia | Tractor · Class 8 | 3AKJGBDV0HSJC7822 | 1 | — |
| 2018 Freightliner Cascadia | Tractor · Class 8 | 3AKJGBDV0JSJL8278 | 1 | — |
| 2025 International LT62F | Tractor · Class 8 | 3HSDZAPR1SN132641 | 1 | — |
| 2015 Volvo Truck VNL | Tractor · Class 8 | 4V4NC9EH6FN919341 | 1 | — |
| 2026 Volvo Truck VNR | Tractor · Class 8 | 4V4WC9EH9TN705184 | 1 | — |
| 2011 Vanguard National Trailer Corporation (vntc) | Dry Van · 53 ft | 5V8VA5321BM101120 | 1 | — |
| 2022 Vanguard National Trailer Corporation (vntc) | Dry Van · 40 ft | 5V8VC401XNM203309 | 1 | 1 |
| Walker Sta | Semi-trailer | 5WSAA43246N037726 | 1 | — |
A vehicle appearing here was recorded in an inspection — it is not proof the carrier still operates it today.
Inspection Details
Each roadside inspection with its violations
Inspection Records (33)
| Date | Report # | Location | Level | Viol | OOS | Shipper | Unit Type | Make | VIN | License |
|---|---|---|---|---|---|---|---|---|---|---|
| August 27, 2026 | 0317001065 | FOREST LAKE MN | I | 2 | 1 | CARRIER | Straight Truck Semi-trailer |
VOLVO WABASH NAT |
4V4CC9EH6VN729853 5WSABB230SN423873 |
MN PZC1182 MN STB4909 |
| 393.75A3-TAOL | OOSTires - All others, leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS | Tires | ||||||||
| 396.3A1-ALBV | Air Brake - Any leak from a brake valve | Brakes All Others | ||||||||
| July 20, 2026 | 5350001139 | VIVIAN SD | III | — | — | CHAMBERLAIN OIL | Truck Tractor Semi-trailer |
INTERNATIONAL UTILITY TRAILER MANUFACTURER |
3HSDZAPRXSN696966 1UYVS2484N3678401 |
MN PZA9835 MN STB2489 |
| June 18, 2026 | 205S000091 | IA, IA | I | 4 | — | CF INDUSTRIES | Truck Tractor Semi-trailer |
VOLVO TRUCK WALKER STA |
4V4WC9EH7KN199059 5WSAA43246N037726 |
MN PAV2064 MN 4632STY |
| 393.45B2-B-AIR | Air Brake - Hose/tubing damaged or not secured | Brakes All Others | ||||||||
| 393.45B2-B-AIR | Air Brake - Hose/tubing damaged or not secured | Brakes All Others | ||||||||
| 393.47E | Brake Out of Adjustment - Roto, Clamp (Short & Long), DD-3, or Bolt | Brakes Out of Adjustment | ||||||||
| 393.47C-BSAMBD | Drum Brake - Slack adjuster length mismatched on the same axle other than a steering axle | Brakes All Others | ||||||||
| June 16, 2026 | 1667000948 | WEST LAKELAND MN | I | 4 | — | CARRIER | Truck Tractor Semi-trailer |
VOLVO TRUCK UTILITY TRAILER MANUFACTURER |
4V4NC9EH1NN298038 1UYVS2405L3882504 |
MN PZA7712 MN STF5063 |
| 393.45D-B | Air Brake - Audible air leak at a proper connection | Brakes All Others | ||||||||
| 393.47E | Brake Out of Adjustment - Roto, Clamp (Short & Long), DD-3, or Bolt | Brakes Out of Adjustment | ||||||||
| 393.53B-B | Air Brake - CMV manufactured on or after 10/20/1994 has an automatic airbrake adjustment system that fails to compensate for wear | Brakes All Others | ||||||||
| 393.9A-LBL | Lighting - Backup lamp inoperative | Lighting | ||||||||
| May 26, 2026 | 1675001179 | CLARKS GROVE MN | III | 1 | — | CHAMBERLAIN OIL CO INC | Truck Tractor Semi-trailer |
VOLVO TRUCK POLAR TANK TRAILER |
4V4NC9EH4PN615054 1PMKA4424N7117180 |
MN PZB0300 MN 9446STY |
| 392.2-SLLEWA1 | State/Local Laws - Excessive weight - 1-2500 lbs over on an axle/axle groups | |||||||||
| May 19, 2026 | U712601320 | WIBAUX MT | III | — | — | CHAMBERLAIN OIL COMPANY | Truck Tractor Semi-trailer |
VOLVO TRUCK WABASH VANS |
4V4NC9EH1NN298038 1JJV532D0DL737087 |
MN PZA7712 MN 01942768 |
| April 22, 2026 | 5430002536 | CANTON SD | II | 2 | 1 | CARRIER | Truck Tractor Semi-trailer |
VOLVO TRUCK VANGUARD NATIONAL TRAILER CORPORATION (VNTC) |
4V4NC9EH0PN615083 5V8VC401XNM203309 |
MN PZB0301 MN STE6075 |
| 177.823A-HMTVMCMID | OOSHM (Transport Vehicle Markings) - Any ID Number misrepresents the material transported. | Markings - HM | ||||||||
| 392.2-RRTCD | Railroad Crossing - Failed to obey a traffic control device or the direction of an enforcement official at a railroad-highway crossing | Dangerous Driving | ||||||||
| April 2, 2026 | 1671001122 | WORTHINGTON MN | III | 1 | — | CARRIER | Truck Tractor Semi-trailer |
INTERNATIONAL UTILITY TRAILER MANUFACTURER |
3HSDZAPRXSN696966 1UYVS2484N3678401 |
MN PZA9835 MN STB2489 |
| 392.2-SLLSR | State/Local Laws - State registration/tag violation | |||||||||
| March 12, 2026 | 0025000779 | BLAINE MN | III | 1 | — | CARRIER | Truck Tractor Semi-trailer |
INTERNATIONAL VANGUARD NATIONAL TRAILER CORPORATION (VNTC) |
3HSDZAPR8SN357851 5V8VA3620GM602698 |
MN PZB0365 MN 3087STR |
| 392.2-SLLSR | State/Local Laws - State registration/tag violation | |||||||||
| December 4, 2025 | 2628005836 | SOUTH RANGE WI | I | 2 | — | SAME AS CARRIER | Truck Tractor Semi-trailer |
VOLVO TRUCK GREAT DANE TRAILERS |
4V4NC9EH1NN298038 1GR1A9622PB444919 |
MN PZA7712 MN STA0966 |
| 393.45B2-B-AIR | Air Brake - Hose/tubing damaged or not secured | Brakes All Others | ||||||||
| 393.45B2-B-AIR | Air Brake - Hose/tubing damaged or not secured | Brakes All Others | ||||||||
Shippers Seen at Inspections
Shipper names recorded by roadside inspectors over roughly the last three years. Only inspected loads appear, so this is a sample of who the carrier hauls for, not a complete customer list. Names are as entered at the roadside; blanks and placeholders such as “N/A” or “same as carrier” are left out.
| Shipper | Inspections | Most recent |
|---|---|---|
| NORTHLAND PRODUCTS | 5 | June 12, 2025 |
| CF INDUSTRIES | 1 | June 18, 2026 |
| LOST | 1 | March 27, 2024 |
History & Filings
Authority, insurance and process-agent records
Authority History
| Date | Status | Type |
|---|---|---|
| September 23, 2014 | DISCONTINUED REVOCATION | Contract |
| September 15, 2014 | INVOLUNTARY REVOCATION | Contract |
| February 19, 1997 | DISCONTINUED REVOCATION | Contract |
| January 23, 1997 | INVOLUNTARY REVOCATION | Contract |
| June 16, 1987 | GRANTED | Contract Carrier |
Insurance & Revocation Filings
| Date | Type | Status |
|---|---|---|
| September 1, 2015 | BI&PD Primary/Excess | On file |
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Data sourced from FMCSA MCMIS via Socrata. Record last updated: October 5, 2026.
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