Product Bundles (15% off)


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*Can combine with other discounts.

Enjoy an instant 15% discount (already marked down) on these bundles of our most popular products that FIX & PREVENT issues with your gas or diesel equipment. And these can be combined with other discounts we offer (unless stated otherwise). So if we offer a discount code, buy the bundle, then apply the additional discount!

Great for your own needs, or to give as a gift (think of those special occasions and holidays!).

For details about each product, including overviews and safety data sheets, just visit the product page for that product within the bundle.

What do you get in each bundle?

GAS BUNDLE (normal price $117.90, bundled price $100.22)

  • Two (2) Packs of three (3) count MECHANIC IN A BOTTLE 2 IN 1 GASOLINE QUALITY TEST SWABS
  • Three (3) packs of five (5) count FUEL-LIFE-IN-TANK FUEL STABILIZING FILTER
  • Six (6) one gallon mix ETHANOL SHIELD 2-CYCLE OIL
  • One (1) twenty-four (24) ounce bottle of MECHANIC IN A BOTTLE
  • One (1) twenty-four (24) ounce bottle of ETHANOL SHIELD

DIESEL BUNDLE (normal price $127.81, bundled price $108.64)

  • One (1) Pack of ten (10) count DIESEL MECHANIC IN A BOTTLE 4-IN-1 TEST SWABS
  • One (1) twenty-four (24) ounce bottle of DIESEL MECHANIC IN A BOTTLE
  • One (1) twenty-four (24) ounce bottle of DIESEL MECHANIC IN A BOTTLE DEF REDUCER

MECHANIC IN A BOTTLE GAS & DIESEL ALL-IN-ONE ADDITIVE BUNDLE (normal price $38.94, bundled price $33.10)

  • Ultra-concentrated synthetic gasoline & diesel additive for use in all gas, gas-ethanol blends, diesel and biodiesel blends
  • Just pour in the fuel tank of any 2-cycle, 4-cycle, or diesel engine to help fix & maintain your cars, trucks, boats, tractors, small engines and more.
  • Use regularly (recommend monthly) to maintain PEAK ENGINE PERFORMANCE.

Additional information

Weight N/A

Diesel, Gas, Mechanic In A Bottle

Featured Fuel Solutions
product diesel gal


product diesel gal
Friction Fix

Friction Fix

Friction Fix

In-Tank Stabilizing


What They Say

About B3C's Products

I received information about Ethanol Shield from Yamada Nursery. I used it in my lawn mower and then put it in my car and got very good results. I now recommend your product to all of car collector friends.

~ John W.

I've used Ethanol Shield for several years in my: 1940 car that I rarely start, blue bird day only '72 Honda 500 motorcycle, spring/fall power washer, fall only leaf blower, and when need be chain saw.

...and they all start every time!

- Mike G.

Used this product for almost a year, no issues whatsoever. Believe it’s does what it says it’s supposed to do.

- Shawn Walker

You'll hear when this stuff hits your engine. Makes everything all better!

- Joesph B Moffett

I must say that it lived up to all the hype. I've used it in several small engines from rototillers and snow blowers to atvs and go karts and it has worked in all of them. Many of them ran very rough and wouldn't idle, or wouldn't start at all, but after adding MIB they all run much better and continue to improve the longer they run. I added some to my truck that would missfire intermittently and after just a couple of days it was running much smoother and the check engine light went out. I'm very impressed with this to say the least.

- Allan

I've used it in a few different situations where either a two-cycle motor was running rough or a four-cycle wouldn't start. Just following the directions was all that was needed. To help the solution do it's job, I always have the battery fully charged in the situations where I have and electric starter. It is worth having a bottle or two of this stuff around if you have a lot of engines that must be stored or not used daily (especially seasonal stuff).

- Jif

If you have gas powered equipment, never be out of this stuff. It’s a miracle in a jar. If you put it in you tanks of gas power equipment and let it sit it will start. If you find a piece of equipment that has stale old gas, a few ounces of this and it will start up.

- Terance LaCroix

I had problems with a snow blower that I used high ethanol gas in not starting. Added some Mechanic In A Bottle to an empty tank and let sit overnight - added gas w/Mechanic In A Bottle the next day & it fired up on the first pull. I love this stuff.

- Murphy@216

For about $20 every fall, one application of this to my snowblower gets and keeps it running through the winter, saving costly trips to the repair shop to clean/rebuild the carb. which I did for several years until figuing out it was always a fuel problem.

- S. Wilde

Forgot to put stabilizer in the gas of my outboard for over winter storage, with predictable results. Put some Mechanic in a bottle into the carb and let it sit for 24 hours. Started right up and ran better than ever. Sea Foam is good, but this stuff raises the bar.

- M.E. Dunn

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