Top Tier Diesel

[MrMarco]

Hey folks, I’m in the San Antonio area and there’s only one top tier diesel for my 2025 gmc at4 truck but it is far away. Do you all recommend any diesel additives to improve economy or what do you all do? Thanks!

 

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[gemarsh]

Optilube XPD, year round.

 

[R467X]

I only use optilube xpd