Stoughcool's semi-synthetic coolants are formulated with the most advanced chemistry using new technology to provide excellent machining performance while keeping machines clean and are operator friendly. Like all Stoughcool products, our semi-synthetics run very clean and have excellent sump life with outstanding biological control. Utilizing our C80 Shield Technology, our products resist bacteria providing a clean sump and no bad odors! Our semi-synthetics also are formulated with our "Jet Fresh" scent providing a fresh clean scent in every shop.

Stoughcool JET 9 AVS
Best Seller

Do it all with Stoughcool Jet 9 AVS! A premium high-end semi-synthetic recommended for moderate to heavy-duty machining applications for both ferrous and non-ferrous metals.

Boeing BAC 5008 Revision B Compliant

Excellent semi-synthetic replacement for the following brands:

  • Trim Microsol Series
  • Qualichem Semi-Synthetics
  • Fuchs Semi-Synthetics
  • Ashburn Semi-Synthetics
  • Dubois/Cimcool Semi-Synthetics
  • Castrol Semi-Synthetics
  • Quaker/Houghton Semi-Synthetics
Stoughcool pail

5 Gallon Pail
$123.64

Stoughcool drum

55 Gallon Drum
$1195.00

Stoughcool tote

275 Gallon Tote
$5892.50

Call for pricing on additional products listed.

Semi-Synthetics Product List

  • Jet 9 AVS
    BEST SELLER!
    A moderate-to-heavy duty micro emulsion that is extremely clean and can be used for machining both ferrous and non-ferrous metals.
    (click for data sheet)
  • Jet 9 LT
    Premium well rounded moderate-to-heavy duty chlorine free semi-synthetic.
    (click for data sheet)
  • Jet 9 LX
    Premium heavy-duty semi-synthetic recommended for both ferrous and nonferrous materials in tough machining applications.
    (click for data sheet)
  • Jet 9 AV
    Premium non-chlorinated soluble oil developed for Aerospace material machining and also recommended for both ferrous and nonferrous materials for heavy-duty machining.
    (click for data sheet)