Phil’s track loaders loaded for transport at sunset.

Keep Your Fleet Running. Keep Your Day Moving.

Oils, lubricants, fuel treatments, and maintenance products for equipment that has to work.

Why Conklin Vehicle Products?

Protection for Equipment That Earns Its Keep.

Three featured products for diesel engines, heavy-duty lubrication, and fuel-system care.

2,5 gallon container of Convoy 15w-40 parasynthetic motor oil with molybdenum

Featured diesel engine oil

Convoy® 15W-40 CK-4

Parasynthetic diesel engine oil formulated for engines with or without exhaust aftertreatment systems. Contains molybdenum as a friction modifier and is backward compatible with CJ-4, CI-4 Plus, CI-4, and CH-4 specifications.

Rhino® grease in a 5-gallon pail, 30-gallon drum, and grease cartridge.

Featured Extreme-Pressure Grease

Rhino® #2 Parasynthetic Grease with Moly

Extreme-pressure lithium complex grease made with highly refined conventional and synthetic base oils. Molybdenum disulfide provides added protection under heavy shock loads, while Rhino’s high dropping point supports stability and durability at high temperatures.

4-POWER® D diesel fuel system cleaner bottles displayed with the product carton.

FEATURED DIESEL FUEL-SYSTEM CLEANER

4-POWER® D Diesel Fuel System Cleaner

Powerful diesel fuel-system cleaner formulated to restore performance, improve fuel dispersion, and support more complete combustion. Helps promote easier starts, improve mileage, and reduce fuel-system problems. It can also be used as an emergency fuel de-icer.

Where Do Equipment Problems Cost You Most?

Start with the equipment or maintenance issue costing you time, reliability, or repair dollars.

LONG HOURS & HEAVY LOADS

Tractors, Combines, Skid Steers, Semis

  • Heat, load, and long operating hours can break down oil and accelerate wear.
  • Start with engine oil and grease formulated for demanding service.

INTERMITTENT-USE EQUIPMENT

Pickups, UTVs, Service Vehicles

  • Stored fuel, short trips, and irregular use can contribute to hard starts and inconsistent performance.
  • Start with fuel-system cleaning, treatment, and stabilization.

HYDRAULICS & DRIVETRAINS

Hydraulics, Transmissions, Gearboxes

  • Pressure, heat, moisture, and load can show up as slow response, noise, or wear.
  • Start with fluids and lubricants matched to the application.

SMALL ENGINES & SHOP EQUIPMENT

Mowers, Chainsaws & Small Engines

  • Seasonal use and fuel-system deposits can contribute to hard starts and rough performance.
  • Start with practical fuel and maintenance products for smaller equipment.

Not Sure Which Products Fit Your Equipment?

Tell us what you operate, how it is used, and what problem you are trying to solve. We’ll help narrow the options without overcomplicating it.

What Equipment Owners Are Seeing

Experiences from customers using Conklin Vehicle Products in working equipment and daily operations.

stock image of different container sizes of TKO oil additive, pints, gallon, five gallon.

— Tim A. · Northeast OK

“Using TKO and Diesel Plus saved me over 10% on my fuel costs when working ground. I run Case IH tractors.”

Customer/product user testimonial. Individual results may vary.

View TKO Spec Sheet

stock photo of containers of Diesel Plus, quart, gallon, five gallon, and 55 gallon drum.

— Joseph D. · Bristow, OK

“Switching to Convoy and using 4-Power D and Diesel Plus saved me over $400 a trip hauling travel trailers from the manufacturer in Indiana to the dealer in Oklahoma. I drive a Chevrolet 3500 with a Duramax.”

Independent Conklin Distributor. This person may benefit from product sales. Individual results may vary.

Ask About This Setup

PRODUCT DEMONSTRATION

See Dike® Temporary Radiator Stop Leak in Action

Jerad Noble demonstrates how the product is used for a temporary radiator repair.

Jerad Noble demonstrates how the product is used for a temporary radiator repair.

PICKUP & WORK VEHICLE CARE

A Simple Three-Product Starting Point

Support the engine, fuel system, and automatic transmission with products matched to your pickup or work vehicle. Gasoline and diesel applications require different products, so we’ll help you select the right combination.

stock image of retail packages of TKO oil additive

Engine Protection

TKO Engine Oil Treatment

Designed to help reduce friction and support engine protection during everyday driving, towing, and demanding use.

stock image of retail packages 4-Power D fuel system cleaner

Fuel-System Cleaning

4-POWER® D or 4-POWER® G

Choose the diesel or gasoline formula appropriate for your vehicle to help clean fuel-system components and restore performance.

stock image of retail package of Tran-Last transmission oil additive.

Automatic Transmission Care

Trans-Last® ATF Conditioner

Formulated to support fluid performance, transmission cleanliness, and protection in compatible automatic transmissions.

Not sure which products match your vehicle?

Tell us what you drive and how you use it. We’ll help you choose products that fit the vehicle and the job.

SMARTER EQUIPMENT MAINTENANCE

Test Before You Extend Your Drain Interval

Oil analysis can identify wear metals, fuel dilution, contamination, and additive breakdown before they contribute to costly equipment problems.

Conklin’s prepaid oil-analysis kits make the process straightforward: collect the sample, send it to the laboratory, and review the report before changing your service interval.

Extend the interval only when the test results and manufacturer recommendations support it.

stock photo of oil analysis sample kit including form, sample bottle and shipping bottle.

Prepaid Oil Analysis Kit

Everything needed to collect and submit an oil sample for laboratory analysis.

stock photo of oil sample pump for collecting oil sample for anlysis

Oil Sample Pump

A reusable tool for drawing a clean, representative sample through the dipstick or sampling port.

Explore the Complete Vehicle Products Line

Review engine oils, lubricants, fuel treatments, maintenance products, and application information in the Vehicle Products catalog.