Gasoline Products

Fuel additive products to maximize service life and reduce downtime for all your gasoline powered equipment.

3 products

Which product fits the job?

Product What it solves Best for Key spec
3000 Phaser Premium Gasoline Fuel Additive - Prevent and reverse phase separation Water and phase separation in ethanol gas, plus carbon, gum, sludge and varnish deposits Gasoline, marine, diesel and industrial engines, especially those running ethanol gas Maintenance rate: 1:500 (1 part per 500 parts gasoline)
403 Protect O Lube Plus Carbon, gum and varnish buildup, engine acids, sticking valves and moisture in fuel Gasoline, marine, industrial and pre-2007 on-road or pre-2011 nonroad diesel engines Treat rate: 1:300 (1:1000 maintenance, 1:100 cleanup)
406 Injector Perfector Fouled injectors and intake valves, combustion deposits, gas engine knock, ping and run-on Gasoline engines (any ethanol blend), diesel fuel systems and burner nozzles Treat rate per 20 gal: 12 oz clean-up, 3 oz keep-clean

Specs are summarized from each product's manufacturer Technical Data Sheet, linked on its product page.

Gasoline Products questions and answers

  • What should I use for phase separation in ethanol gas?

    Use Primrose Phaser 3000, which prevents and reverses phase separation, where excess water splits ethanol-blended gasoline into a gasoline layer over a water and ethanol layer that will not ignite. Its 1:500 maintenance rate provides water removal in humid or wet conditions. Reversal may take 1 gallon per 30 to 100 gallons of gasoline, and doses stronger than 1:500 may only be used in off-road gasoline.

  • How do I treat gasoline for seasonal storage?

    For seasonal storage stability, Primrose recommends treating gasoline with Phaser 3000 at 1:500, meaning 1 part Phaser 3000 to 500 parts gasoline. The same 1:500 rate provides water removal and keep-clean performance in humid or wet environments, and doses stronger than 1:500 may only be used in off-road gasoline.

  • Which Primrose additive cleans fuel injectors and carburetors?

    406 Injector Perfector is the Primrose fuel injector and intake system detergent; it cleans up carburetors, fuel injectors and intake valves at a clean-up dose of one 12 oz bottle per 20 gallons of fuel, or 3 oz per 20 gallons to keep clean. Phaser 3000 and 403 Protect-O-Lube Plus also remove carbon, gum, sludge and varnish from fuel injectors and carburetors.

  • What is the difference between Phaser 3000, 403 and 406?

    Phaser 3000 is an ethanol gasoline fuel stabilizer that prevents and reverses phase separation, 403 Protect-O-Lube Plus is a fuel stabilizer concentrate that neutralizes engine acids and removes carbon, gum, sludge and varnish, and 406 Injector Perfector is a fuel injector and intake system detergent. Treat rates are 1:500 for Phaser 3000 maintenance, 1:300 for 403, and one 12 oz bottle per 20 gallons for a 406 clean-up.

  • Can I use Phaser 3000, 403 or 406 in diesel fuel?

    Phaser 3000, 403 Protect-O-Lube Plus and 406 Injector Perfector are all listed for diesel, but 403 does not comply with federal ultra-low sulfur requirements for model year 2007 and newer diesel motor vehicles or model year 2011 and newer diesel nonroad equipment engines, so it is not for those. Phaser 3000 and 406 state they comply with federal low sulfur requirements for diesel motor vehicles and nonroad engines.