Heavy Duty Engine Oil (HDEO) - Diesel Vehicles

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