Oil & Lubricant Guides

Schaeffer’s 0315 Simplex Supreme
Tractor Hydraulic Fluid vs Hydraulic Oil: Choosing the Right Product
Learn why tractor common-sump fluid, industrial hydraulic oil and TO-4 drivetrain fluid are different, plus how to compare Simplex Supreme and Low Vis. Read more...
Schaeffer’s 9000 SynShield™ OTR Plus Full Synthetic 5W-40
5W-40 vs 15W-40 Diesel Oil: How to Choose for Your Engine
Compare two common diesel oil grades, understand why CK-4 and OEM requirements matter, and avoid confusing light-duty diesel oil with heavy-duty formulations. Read more...
Schaeffer’s 6530 SynShield™ All Performance Full Synthetic 5W-30
How to Choose the Right Motor Oil: Viscosity, Specifications and Engine Type
A practical checklist for choosing motor oil by engine requirements, viscosity and specifications—not vehicle brand alone. Read more...