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Garcia5f

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Walla Walla Washington
I have a 2020 Chevy Silverado 1500 trail boss. Been looking everywhere and can’t seem to find any information. Can I run premium gasoline in my truck? It’s a 5.3L
 
The higher octane fuel burns cleaner- important for direct injection engines. A little extra to help keep the carbon minimized is worth it in my opinion. Always use Top Tier fuel.
I just installed an Oil Catch Can assembly on my '19 with a 5.3 and 35,000 miles. Took me about 20 minutes to install, plug-n-play. From what I have read this is really important on these direct-injected engines that don't get the washdown of the valvetrain from the fuel. This is a link to the site where I purchased it from- https://www.sbfilters.com/jlt/oil-separators/driver-side-3086D-B?list=Oil Separators. I'll have to see how much gunk it catches after a couple of thousand miles.
Oil Separator.jpg
 
I got my brand new 2022 refreshed trailboss with the 6.2 motor and the salesman put 87 in it because he said the engineers at GM said 93 is recommended but not required for my motor. I noticed it idling a little rough at stop lights and such. Next tank I filled up with 93 and it smoothed out. 93 from here on. It's worth the extra what? 6 or 7 bucks a tank maybe? Whoopdie do. I'd probably still out 93 in if I got the 5.3 motor.
 
5.3 it is a waste to run anything greater than 87. 6.2 it is recommended because it is a higher compression motor which run better and create more power with high octane.
 
My manual for my 2021 Trail Boss with the 6.2 says 93 octane. My wife's 2021 Tahoe with the 5.3 says 93 as well. So I assume yours is the same. I don't have 93 in my area, so I am running 91. But supposedly that is okay in the higher elevations. They say higher octane is needed for higher oxygen areas, or lower elevations. Also, top tier is requested and I think is very important that you try to use only top tier fuels whenever possible. I also try to make it a point to use ethanol-free fuels. Top tier provides extra engine-cleaning detergents and better filtration standards. And ethanol-free simply has a cleaner combustion.
 
Must be nice living where you can get ethanol free fuel. It's been 15% ethanol here in Michigan since the mid 90's.
 
Upstate NY my friend… Only at a few stations and one is only a few miles from my house… Most are 10% ethanol…
 
In my town, there are about three gas stations that I can think of that offer ethanol-free as well as top tier. Still fairly rare considering there are about 65,000 people here. There is a Maverick here that offers ethanol-free but it is not top tier. They call it their Clear Blue fuel. Two Sinclairs and one Conoco have top tier and ethanol-free.
 
I have the 6.2L and I run 93.
I pretty much always run 93 on every vehicle, even though it might be a waste I think it gives you a cleaner burn and increases performance. Even if it’s just slightly, but everyone has an opinion on this subject.
 
Higher octane fuel is always the best in my opinion. Doesn't matter if its my truck, Cobra Mustang, UTV's, boat or my seven chainsaws. Never can go wrong. No issues thus far on my 22 TB with 28K miles.
 
I also use 93 octane in my 6.2 2022 ltd TB. Not sure where I seen it. It may have been on this web sight. but it said if you can afford a Sixty thousand dollar $$ truck you can afford to but a premium fuel.
 

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