r/DieselTechs is a subreddit with 33k members. The most common kinds of discussions are advice requests and solution requests, and the community frequently discusses looking for, advice, hate, struggling, and tool, and they frequently recommend/review multimeter, work boot, and tool brand.
Where diesel techs help other diesel techs with questions, advice, how-tos, and - sometimes - sweet, sweet karma.
Popular Themes in r/DieselTechs
#1
Advice Requests
: "Is starting at $28/hr as a new diesel mechanic worth it long term?"
15 posts
#2
Solution Requests
: "Help understanding required mechanic tool sizes ."
5 posts
#3
Pain & Anger
: "1lw 3406e head gasket issue"
1 post
#4
Opportunities
: "About to get into the diesel tech world but I’ve got two different opportunities for a job and would like some input on which is better"
1 post
Popular Topics in r/DieselTechs
#1
Looking For
18 posts
#2
Advice
: "Advice for a young woman going into diesel?"
6 posts
#3
Hate
4 posts
#4
Struggling
3 posts
#5
Tool
: "What shop Tooling is expected to be provided?"
3 posts
#6
Tired Of
2 posts
#7
Career
: "Career change advice"
2 posts
#8
Community College
: "Community College or Shop"
2 posts
#9
Picture
: "What’s wrong with this Picture?"
2 posts
#10
Freightliner
: "2016 Freightliner m2"
2 posts
Products Discussed in r/DieselTechs
Multimeter
46 reviews
#1
Fluke
4.4★ from 22 reviews
#2
Klein
4.2★ from 6 reviews
#3
Fluke 87V
4.5★ from 2 reviews
Work Boot
27 reviews
#1
Red Wing
4.9★ from 8 reviews
#2
Danner
4.4★ from 5 reviews
#3
Keen
4.0★ from 2 reviews
Tool Brand
11 reviews
#1
Snap-on
4.7★ from 3 reviews
#2
Tekton
4.0★ from 2 reviews
#3
Mayhew
4.0★ from 1 review
Flair Used in r/DieselTechs
#1
General assistance
: "Are these a violation?"
19 posts
#2
Diagnostic assistance
: "1lw 3406e head gasket issue"
11 posts
#3
Check it out!
: "What’s wrong with this picture?"
7 posts
#4
That looks expensive!
: "I wonder where that piece went. Oh, nevermind."
2 posts
Member Growth in r/DieselTechs
Yearly
+5k members(16.7%)
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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/DieselTechs, 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: September 19, 2026