# Are OEM Oil Recommendations Influenced By EPA Rules? Here's What One Expert Has To Say

> Here at SlashGear we advise following engine oil grade and classification recommendations in your vehicle's owner's manual.

- **Source:** [SlashGear](https://www.slashgear.com/1932391/how-oem-oil-recommendations-influenced-by-epa-according-to-expert/?utm_source=gearopen.com&utm_medium=referral&utm_campaign=feed&utm_content=6898bd1b2c4d782ff38db5f3)
- **Published:** 2025-08-10
- **Category:** Cars
- **Tags:** #recommendations #engine #expert #high #influenced #mileage #rules #additives
- **Canonical:** http://localhost:4321/a/6898bd1b2c4d782ff38db5f3

---

_GearOpen's distilled summary. The full original article is published at SlashGear (source link above); GearOpen does not republish the source's full text._