Search results

2017

Which 5w-40 are you running? EFM or AFL? Black or red label

Comparing Amsoil EFM to AFL: EFM has a kinematic viscosity @ 100°C of 13.6, with a HTHS of 3.7. Preferred pricing at $8.89/qt. AFL has a kinematic viscosity @ 100°C of 14.3, with a HTHS of 3.8. Preferred pricing at $11.89/qt. Is the slightly higher HTHS and viscosity worth the extra 34% in...

3.0T

@Pablo So based on this, the AFL wouldn’t be a good choice for my application despite having a higher kinetic viscosity at 100°C than EFM because it technically isn’t approved? That seems strange. Can you explain how Amsoil handles the “approved” vs “recommended” process?

Thank you for your feedback! Motul 8100 X-Cess Gen 2 and Amsoil AFL or EFM have very similar HTHS numbers at 3.8, 3.8, and 3.7 respectively. Is 0.1 enough to make a difference? I’m leaning towards no.

I usually stick to a 5000 miles OCI, at most I push to 7500. I feel like EFM would be fine at those intervals. Thoughts?

Guilty as charged 😬

Appreciate the response! Does EFM not hold to a SAE 40?

I’m trying to decide which is the best oil for my Audi Q7 requiring VW 502 oil. Based on my interpretation of the Amsoil data sheet attached, the EFM variant is the only one that has the actual VW 502 approval. The AFL version is “recommended for applications requiring VW 502” but doesn’t say it...