SoyShield Premium Diesel is available pre-blended from Cropper Oil & Gas. It boosts diesel engine performance while providing a new market for soybeans . Thanks to superior lubricating value of soy, it improves lubricity, boosts fuel efficiency and extends engine life. At just under 3 cents* per gallon more than #2 diesel, SoyShield Premium Diesel is the environmentally friendly way to boost diesel engine performance, support clean air and encourage the growth of agri-fuels from USA farms.

SoyShield Premium Diesel Upgrade Additive was developed with the support of the National Biodiesel Board (NBB) and the Minnesota Soybean Research and Promotional Council (your check off dollars at work).

Our roots are with the American farmer. For over 160 years, Schaeffer Manufacturing Company has worked with farmers to develop lubricating solutions for all types of equipment. Now, we are working together to provide the fuel of the future.

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