What is the difference between Primary (Pre) and Secondary (Final) Filtration systems
Diesel Care offer D.I.Y. fuel filter kits in two variants for most of the vehicle range we cover; Primary (pre) and Secondary (final). We've had a few people ask what the difference is between our Primary and Secondary Kits, so we'll explain in the attached brochure. Both options will provide much better protection than not having an additional filter. Each one has their advantages we do have a preference.