
Why Conklin Vehicle Products?
Protection for Equipment That Earns Its Keep.
Three featured products for diesel engines, heavy-duty lubrication, and fuel-system care.

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.

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.

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.

“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.

“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.
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.

Engine Protection
TKO Engine Oil Treatment
Designed to help reduce friction and support engine protection during everyday driving, towing, and demanding use.

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.

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.

Prepaid Oil Analysis Kit
Everything needed to collect and submit an oil sample for laboratory analysis.

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.
