Bβlaster Surface Shield is the longest lasting, Rust Protectant on the market. This unique formula is easy to apply and provides complete corrosion protection for all metal surfaces, equipment and moving parts. It’s the best defense in fighting rust.
- Extreme Moisture-Wicking Action
- Long-Lasting Lubrication
- Safe, Lanolin-Based Formula
- Use on All Metal Surfaces, Equipment & Moving Parts












Sam –
I applied this undercoating on August 24th (2021), with the Surface Shield spray bottles that I bought from eBay. Today is December 18th, 2021. The undercoating is holding up great so far, as you can see in the pictures here. I will update when a full year has elapsed, because I want to see if it lasts that long also, just like you guys.Update August 11th 2022:Bad news: It seems that the Blaster Surface Shield has completely worn away from some external surfaces near the front of the car, however that is because I take it through tunnel washes with the underbody wash feature. So buyer beware, do NOT use an underbody wash until after winter is done! I have attached a photo of the front subframe from late September 2021 (Yes, September 2021!), this picture was taken after probably 2-3 automatic underbody washes. I didn’t think anything of it until now, because I thought the Surface Shield turned into a slick, invisible finish. But now I realized that the Surface Shield had more obviously stayed on the rear subframe and the emergency brake lines for a much longer time. The other pictures attached are the rear subframe from December 2021. So, STAY AWAY FROM UNDERBODY WASHES UNTIL SPRING!!!!Good news: The Blaster Surface Shield still remains INSIDE the subframes that I sprayed it inside. I accidentally put my finger inside the front subframe, and I took it out completely covered in Blaster Surface Shield. This happened in July 2022 (11 months after I coated it in late August 2021).The coating has also remained on the rear subframe, as evidenced by an attached picture labeled August 11th, 2022. It’s getting a bit spotty, but I will excuse it due to the underbody washes. Also, the rear subframe coating lasted as long as I needed it to, offering protection on my car for at least a year.NOTE: When I undercoated my vehicle in August 2021, I used the Blaster Surface Shield 12oz cans. That’s why you didn’t see a “Verified Purchase” label next to my review until today. I just bought the whole 1 gallon size, and a dedicated undercoating sprayer to help cover everything at a much more efficient cost. I paid eBay about $13 per can last year for 6 cans, and I think that was a rip-off to be honest.ANOTHER NOTE: As of the time of editing this review again, (8/18/2022), I noticed that a 1 gallon can of Fluid Film costs less than HALF as much as the 1 gallon jug of Blaster Surface Shield here. Blaster Surface Shield is comprised of 2 active ingredients, the lanolin and the petroleum jelly. The petroleum jelly seems to like to stay in internal surfaces for a very long time (the inside of the front subframe for a year so far), but the lanolin doesn’t seem to last as long. And considering that my front subframe exterior is dry, I think it might be a good idea to alternate between Fluid Film and Blaster Surface Shield for the cost savings. You won’t need recurring application of the petroleum jelly stuff in Blaster Surface Shield, because it stays in inner locations for a long time (while it doesn’t seem to last on exterior surfaces). You could save a bit of money and use Fluid Film every other year and just coat the external areas before winter, so you still have the desired rust protection.
Ken Holley Jr –
seems to spray on nice and sticks will see in a year or so
Jamie w –
First of all. Im not sure this is worth twice the price of the fluid film. This product is thinner and wastes much more in the air and ground if not sprayed with a pro level gun. It sprays like a thin vegetable oil rather than a wax and continues to drip if you put it on a little heavy. If you do have a cheaper undercoating gun, spray it light and follow up with a paint brush to spread it out. I will be using fluid film black next time and maybe a can or two of this surface shield to get into the places that require a thinner oil. It does seem to work itself into tighter areas much better. It also does have a smell for people saying it doesnβt smell like anything. It smells a lot like motor oil and if you get it on the exhaust it will remind you every time it gets hot. SoMake sure your wrapping everything you donβt want sprayed with bags. I think itβs a good product just priced high at the moment for what you get and application method has to be fine tuned. One gallon of this was not enough to finish my regular cab Silverado. I had to grab a can of fluid film to finish it up
Robert M. –
Undercoat PU tuck
jay coons –
Do yourself a favor and buy the 5 gallon bucket you will want to rust proof every car you have maybe even the neighbors
Jlarson –
Won’t know how good it is until after winter but I watched the reviews on YouTube and this is supposed to be the best on the market at the moment. I’ve been through a few car washes and it’s still there.
Randy t. –
Itβs very wet and the rain has taken most of it off. Total crap.
Gift giver –
Initial thoughts-seems to be a really good product. Favorite benefit is that it doesnβt drip. I did this in my driveway. I had cardboard ready and didnβt need it. Very important to keep it stirred up otherwise it didnβt spray right.