18/10/2026
Standards evolve. A clear oil selection process matters.
The recent API 1509 amendment is a reminder for workshops, retailers and fleet managers to verify oil category and viscosity before stocking or servicing. Start with the vehicle owner’s manual—not assumptions based on the oil used last time.
Then use Schmieröl’s Guides alongside our Oil Finder to check your selection against the stated requirements. Keep both category and viscosity in view: neither should be overlooked.
Before your next stock order or oil service, visit schmierol.de/oil-finder and consult our Guides for a more confident selection process.
https://schmierol.de/oil-finder