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Lubrication and General Automotive
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Heavy Duty Engine Oil (HDEO) - Diesel Vehicles
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Sticky
High Performance Lubricants Engine Cleaner
High Performance Lubricants
Oct 31, 2021
2
Replies
26
Views
6K
Feb 26, 2023
xgmad
Sticky
High Performance Lubricants Diesel PDS’s
High Performance Lubricants
Aug 12, 2021
2
Replies
26
Views
10K
Nov 3, 2022
Big_B
W
Schaeffers 5w-40 in a 6.7 Powerstroke
Wbyman22
Jun 1, 2023
2
Replies
28
Views
834
Today at 12:06 PM
fantastic
When did 10w30 HDEO’s come around?
53' Stude
Wednesday at 2:20 PM
2
Replies
31
Views
772
Yesterday at 3:09 PM
53' Stude
Post your latest HDEO change
Creekside
Dec 22, 2021
3
4
5
Replies
88
Views
9K
Thursday at 11:13 AM
evo080808
M
5w-40 Beginning TBNs
mikeintx
May 20, 2023
2
Replies
26
Views
1K
Thursday at 10:24 AM
kschachn
W
which Mobil oil for Nissan td42t
warthog
May 29, 2023
Replies
8
Views
289
Wednesday at 5:04 PM
JimmyChainsaw
W
Probably Overthinking
W9HDG
Tuesday at 5:41 PM
Replies
18
Views
382
Wednesday at 9:59 AM
totegoat
J
Using C3 Oil in C2 Car
jtaylor2005
Jun 2, 2023
2
Replies
20
Views
481
Tuesday at 8:46 AM
Jetronic
R
will CK4 diesel oil harm a non EGR diesel engine?
Redhawk454
Monday at 12:29 AM
Replies
4
Views
236
Monday at 9:50 PM
tnt_motorsports
B
5w-30 MB 229.51 Alternatives?
Booki
May 28, 2023
2
Replies
30
Views
688
Jun 2, 2023
CarbonSteel
P
Changing Oil Brand for My 6.7
pops91710
Oct 31, 2022
2
Replies
24
Views
4K
Jun 1, 2023
Donald
B
Alfa Romeo Giulia 2.2JTDm Oil Pooling in Intake
Bailes1992
Nov 9, 2021
Replies
17
Views
3K
May 23, 2023
TimGulia
P
C1 5w-30?
Pedro_The_Swift
May 20, 2023
Replies
3
Views
320
May 20, 2023
SR5
C
NAPA Fleet Heavy Duty 10w-30 - Any Thoughts?
Clarkbug
May 3, 2023
Replies
7
Views
1K
May 19, 2023
lolpo
R
Does a Turbo diesel engine NEED synthetic oil?
Redhawk454
Apr 7, 2023
2
Replies
30
Views
3K
May 19, 2023
eroberts82
M
If T6 5W-40 when specified is out of stock, what options are there?
mikeintx
May 3, 2023
2
3
Replies
41
Views
2K
May 19, 2023
eroberts82
A
Is Rotella T6 always the answer?
Adam_90
Apr 19, 2023
Replies
15
Views
2K
May 19, 2023
eroberts82
L
Chevron Delo Le 15w40 in Yamaha F250HP
Lucian
May 1, 2023
Replies
17
Views
966
May 18, 2023
PontiacHO
J
HDEO Rating and use in gas engine
jdw1222
Mar 14, 2023
Replies
19
Views
2K
May 12, 2023
Elkins45
S
Using HDEO API C* versus A5B5
SureshR
Apr 29, 2023
Replies
7
Views
520
Apr 30, 2023
SureshR
S
What Enables Such Long Intervals With Diesels??
Stumpy
Sep 18, 2022
2
3
Replies
50
Views
9K
Apr 28, 2023
The motor guy
C
Put some quaker state in my truck.
Chris142
Apr 15, 2023
Replies
15
Views
1K
Apr 23, 2023
fantastic
Motorcraft 10W-30 super duty diesel oil change intervals
leoblack9
Apr 16, 2023
Replies
2
Views
948
Apr 22, 2023
SureshR
What is a reasonably long OCI for this diesel?
OilMagnate
Apr 12, 2023
Replies
12
Views
1K
Apr 21, 2023
MSCH
F
What base oil is in the HDEO Bottle? Post your Info
fantastic
Apr 12, 2023
Replies
5
Views
717
Apr 12, 2023
kschachn
R
Priming the oil filter on a 6.7 Cummins and then screwing it on..
Redhawk454
Jan 16, 2023
2
3
Replies
55
Views
4K
Apr 9, 2023
BrianF
T
Trying to find "The One" 15w40 oil to use across my whole fleet (pre-emission diesel and gas engines)
TrazTractors
Mar 31, 2023
2
Replies
28
Views
3K
Apr 7, 2023
locomaster1969
K
10w30 5w40 diesel oil question?
Kevk
Mar 27, 2023
2
Replies
20
Views
2K
Apr 6, 2023
Bighorn2500
K
Super Tech Seems like you can't say. And what is a valid message
kurtis paulk
Mar 5, 2023
Replies
15
Views
2K
Apr 3, 2023
DGXR
B
The Detroit Diesel 2 Stroke Lubrication Debate
bigdig4
Feb 21, 2023
2
3
Replies
47
Views
4K
Apr 2, 2023
PiperOne
A
2024 gmc hd 6.6 duramax
arowbat
Mar 27, 2023
Replies
15
Views
2K
Mar 30, 2023
userfriendly
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