In this video I break down the whole “Top Tier fuel” debate and why cheap gas (or just inconsistent fuel quality) can bite you long-term—especially if you’re driving a modern direct-injection turbo truck like my Colorado 2.7 TurboMax. There’s a ton of misinformation online about Shell/Chevron/BP, “pure gas,” and ethanol, so I wanted to talk through what actually matters, what doesn’t, and what I’ve seen from owning multiple direct-injection vehicles (including turbo platforms). I also explain why direct injection is louder (high-pressure fuel pump noise is normal), why carbon buildup on the back of the valves is a real concern on DI-only engines, and why port injection helps (my Mustang has DI + port, so it’s a different situation). I’m coming up on 20,000 miles, and since Top Tier stations aren’t super common where I live in Southwest Virginia/East Tennessee, I show what I’m doing to be more preventative—like running a mild cleaner (Chevron Techron) and trying to be more consistent with Top Tier fuel. Big takeaway: 100% gas does not automatically equal “better,” and on turbo vehicles you actually want ethanol for the cooling benefit. If you’re planning to keep a Colorado 2.7L long-term, you need to treat it like a high-compression, high-boost turbo four-cylinder—good fuel, regular oil changes, and realistic expectations.