Big thanks to Carolina Performance Synthetics (   / @carolinaperformancesynthet4412  ) for providing the Amsoil Diesel All in One additive for testing! It's been great chatting with them over the years on the BMW forums sharing BMW diesel modifications, tips, and tweaks.

So I've been a regular user of diesel fuel additive for a while now on my BMW 328d to prevent wear on the HPFP. Additionally, many additives claim to provide a fuel economy benefit, so I ran Amsoil's Diesel All in One product for an extended period of time to see if that held true.

Index:
0:00 Intro
0:18 Importance of lubricity improvement
2:13 Amsoil Diesel All in One lubricity data
3:56 328d fuel economy results
6:52 Conclusion

https://carolinaperformance.shopamsoi...