M11 Cummins Diesel Smoke Test | A & B Truck Repair Results

M11 Cummins Diesel Smoke Test

Independent smoke emissions test conducted on an M11 Cummins diesel engine at A & B Truck Repair in Modesto, CA. This testimonial from Ron Koehn documents dramatic emissions reductions after Cerma STM-3 treatment on an overhauled engine with approximately 2,000 miles.

Test Details

Parameter Details
Engine M11 Cummins Diesel
Test Location A & B Truck Repair, Modesto, CA
Vehicle Test truck number 112
Engine Condition Overhauled, approximately 2,000 miles
Treatment 16 oz Cerma STM-3
Drive Time After Treatment 12 miles

Smoke Opacity Test Results

"He was very surprised at the change."

Test Before After Reduction
Test 1 22.4 3.4 85%
Test 2 18.3 2.1 89%
Test 3 20.0 2.6 87%
Average 20.2 2.7 87%

"The numbers speak for themselves."

Tester Reaction

After the test, Virg (the tester at A & B Truck Repair) had a number of questions and commented that he would tell his son about the product. His son runs the retail side of A & B Truck Repair.

"So keep an ear open you may get a call from A & B Truck Repair looking to carry your product. If they call let me know so I can claim them under my account."

— Ron Koehn

Key Findings

  • 87% average smoke reduction – Dramatic improvement across all three tests
  • Consistent results – All three tests showed similar improvement levels
  • Quick results – Only 12 miles of driving after treatment
  • Works on overhauled engines – Even newer rebuilds see improvement
  • Professional validation – Tested by experienced truck repair facility

What This Means for Diesel Owners

  • Pass emissions testing – Significant reduction in smoke opacity
  • Cleaner operation – Reduced visible exhaust smoke
  • Better combustion – More complete fuel burn
  • Environmental compliance – Meet California emissions standards

Questions about Cerma for your M11 Cummins? Call 239-344-9861 or email Info@cermatreatment.com

View Complete Test Documentation