Looking for the best fuel additive for the 2021 L84 5.3L Engine. I have used Chevron Techron but their are alot of options out there. Wondering what my engine will respond best to.
2021 GM 5.3L L84 Engine, Best Fuel Additive to Use?
- Thread starter scip5.3L
- Start date
Total miles on engine? Oil used? Little more info might be helpful.
4wd
$50 site donor 2026
Redline
0W-20 Valvoline Restore and Protect, 64K miles
There was a study done, I forgot who it was by. Anyhow, the top two products were #1. Red Line SI-1 and #2. Chevron Techron Concentrate Plus out of a list of 13 they tested. I will attempt to put a couple Amazon links on here for you.
https://www.amazon.com/Red-Line-601...653&sprefix=Red+Line+SI+1,aps,145&sr=8-1&th=1
https://www.amazon.com/Chevron-Tech...90781&sprefix=Chevron+Tec,aps,150&sr=8-2&th=1
Patman
Staff member
Just use Top Tier fuel and you’ll never need a fuel system cleaner. Especially if you use one of the stronger fuels like Costco or Shell V Power.
99% of the time I use Costco
So what are you trying to fix? Is there a drivability problem you're having?
I have used Lucas products in my past 2019 5.3, and top tier fuel, Sunoco, never had any issues.
Patman
Staff member
Then you will be fine. I use mostly Costco in my Civic and I have never added any fuel system cleaners. I bought the car with 130,000 km on it and now have 303,000 km. I’m not sure if the previous owner used any, but even if they did, I’ve gone 173,000 km without it and the engine is running perfectly.
Trying to avoid GDI issue, strictly preventative measure
What GDI issue? My Tiguan is GDI, I’d like to know.
High pressure GDi injectors get clogged up/spray pattern altered by carbon
Redline for pea and Valvoline Restore and Protect Fuel System Cleaner for their new tech.
When you say Valvoline Restore and Protect Fuel System Cleaner for their new tech what do you mean by that?
Saw this label while I was at Autozone this morning. None on the shelf, no info online and the counter didn’t have any tracking on it. Wonder what this stuff will be like??
PEA is proven and works great, Redline has the highest concentration of PEA. Along with maybe BG 44K at similar levels.
Valvoline’s product does not utilize PEA and rather has whatever new cleaning tech they have discovered, similar to their Valvoline Restore and Protect oil.
Available in store at AutoZone only so far, but online ordering should start “soon”
I just went to napa and stocked up
Huh! How many ounces is that value size? Never seen that shape/sie of Techron bottle
32 oz. Got em for $12.99 each