Should You Put Additives in Diesel Fuel?

While the nation's supply of diesel fuel is generally dependable, it's not always consistent. Diesel engine makers account for swings in quality when designing and certifying their engines. Generally, they do not endorse or recommend the use of fuel additives.

How often should you use diesel fuel additive?

At least quarterly or as-needed: Add Clear-Diesel Fuel & Tank Cleaner to remove water, disperse contaminants and stabilize fuel for long-term storage.

Can you use too much diesel additive?

Too Much of a Good Thing Can Be Bad

You can easily add too much of a high-quality diesel fuel additive. ... Overdosing can lead to a whole new list of fuel and engine issues from clogged filters to overall decreased engine performance and efficiency. If you're losing lubricity, don't over-treat.