OS-D9: Industrial Strength Degreaser. Reveal Your Car’s True Beauty.

There's dirt shampoo won't touch: years of grease, tar, brake dust baked onto the wheel.

OS-D9 is industrial strength without being caustic: it dissolves the heavy stuff without beating up the surface underneath.

For the parts of the car nobody cleans and everybody notices.

OS-D9 Decon facts

• What it is: industrial-strength degreaser and decontaminant, non-caustic base.
• Where: wheels, engine bay, chassis, undercarriage.
• When: before the wash, on the heavy zones.
• Price: $29.99 USD. Ships from Texas, US only for now. Free shipping over $79.99.

Straight answers

Won't it damage aluminum or wheel paint?

It's non-caustic, built to work hard without attacking the material. On delicate finishes, test a small spot first, same as any degreaser.

Can I use it on the engine?

Yes, that's one of its main jobs. Cover sensitive electrical components before rinsing, the usual.

Where does it go in the order?

D9 first on the heavy zones, then the normal wash with S1.