r/Diesel is a subreddit with 118k members. The community frequently discusses diesel, truck, 7.3, engine, and cummins, and they frequently recommend/review truck, battery charger, and obd2 scanner, and the most common flair used is question/need help!, show off your build, meta, purchase/selling advice, and meme/joke.
Welcome to /r/Diesel, reddit's home for everything about compression motors!
Popular Topics in r/Diesel
#1
Diesel
91 posts
#2
Truck
38 posts
#3
7.3
32 posts
#4
Engine
27 posts
#5
Cummins
24 posts
#6
Powerstroke
21 posts
#7
6.7
18 posts
#8
Turbo
16 posts
#9
Fuel
14 posts
#10
Looking For
12 posts
Products Discussed in r/Diesel
Truck
25 reviews
#1
Ford
3.5★ from 12 reviews
#2
Ram
4.5★ from 4 reviews
#3
Chevrolet
4.7★ from 3 reviews
Battery Charger
11 reviews
#1
Harbor Freight
4.5★ from 2 reviews
#2
CTEK
4.5★ from 2 reviews
#3
NOCO
5.0★ from 2 reviews
Obd2 Scanner
5 reviews
#1
Edge
4.0★ from 1 review
#2
Xtool
4.0★ from 1 review
#3
Diesel Scanners
5.0★ from 1 review
Flair Used in r/Diesel
#1
Question/Need help!
: "What is DEF burning?"
39 posts
#2
Show off your build
: "i find some of the engine sizes you all mention here absolutely ridiculous. behold my 1.6 crdi 6 speed manual"
4 posts
#3
Meta
: "2007 5.9 Cummins to a 2025 6.7 Cummins"
4 posts
#4
Purchase/Selling Advice
: "6.5 Detroit as a daily"
4 posts
#5
Meme/Joke
: "Gotta be some inbreeding going on in kentucky"
3 posts
Member Growth in r/Diesel
Yearly
+16k members(16.0%)
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About
GummySearch helps people research Reddit communities by organizing activity, growth, themes, and post-level signals into one place.
This page gives a focused view of r/Diesel, including current member size, discussion patterns, product reviews, and related communities to explore.
This data is synced periodically so insights stay current and useful for ongoing research.
Last updated: August 14, 2026