Anyone know why C55 vs ML55 sparks plugs are one heat range apart??
Thread Starter
Member
Joined: Nov 2018
Posts: 224
Likes: 59
From: WEST
190E, C36, C55, CLK55, ML55
Anyone know why C55 vs ML55 sparks plugs are one heat range apart??
Doing some research tonight looking to get spark plugs for the ML and noticed when cross referencing that all plugs recommended for both are always one heat range apart.
Varying brands however swap which one is colder or hotter...?
Couple examples of what I am talking about...
NGK (ML55 one step hotter), i.e:
this time oppositely, one step hotter for the C55...
What am I missing here? Or can some explain to why the difference in OE recommendation, Are they interchangeable?
I know the motors have slight differences but with both being 55's of the same era this confuses me a bit.
Any clarification appreciated!
Varying brands however swap which one is colder or hotter...?
Couple examples of what I am talking about...
NGK (ML55 one step hotter), i.e:
- NGK IFR6D-10 C55
- NGK IFR5D10 ML55
this time oppositely, one step hotter for the C55...
What am I missing here? Or can some explain to why the difference in OE recommendation, Are they interchangeable?
I know the motors have slight differences but with both being 55's of the same era this confuses me a bit.
Any clarification appreciated!
Last edited by kaixdiego; Dec 20, 2019 at 02:28 AM.
MBWorld Fanatic!
Joined: Aug 2006
Posts: 7,053
Likes: 398
From: A.D., U.A.E
2000 (W202 C200) & 2000 (W202 C55)
Early 98-00 (M113) ECU/MSG "ME2.0/2.0.1" uses little bit differ sparking angle than late (M113) ECU/MSG "ME2.8/2.8.1",,
never mine, you can use both of them with any "M111/M112/M113"..
-;-ZAYED-;-
never mine, you can use both of them with any "M111/M112/M113"..
-;-ZAYED-;-
MBWorld Fanatic!
Joined: Aug 2006
Posts: 7,053
Likes: 398
From: A.D., U.A.E
2000 (W202 C200) & 2000 (W202 C55)
The benefits with better "Copper core center Electrode" & "Iridium ground Electrode",,
IMO; "Bosch IR Fusion 4504" & "NGK IFR6D10" are the best plugs..
-;-ZAYED-;-
IMO; "Bosch IR Fusion 4504" & "NGK IFR6D10" are the best plugs..
-;-ZAYED-;-
Thread Starter
Member
Joined: Nov 2018
Posts: 224
Likes: 59
From: WEST
190E, C36, C55, CLK55, ML55
yes, since all the plugs I looked at are recommended one heat range apart. Would I be okay running the same heat range specified for the C55 for both C55/ML55?
My theory is maybe they figured out a different heat range worked better as the engine got near the end of production, thus maybe running the same heat range for the ML55 would help it a bit. Also makes things easier ordering bulk of the same plug...
My theory is maybe they figured out a different heat range worked better as the engine got near the end of production, thus maybe running the same heat range for the ML55 would help it a bit. Also makes things easier ordering bulk of the same plug...
Trending Topics
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Thread Starter
Member
Joined: Nov 2018
Posts: 224
Likes: 59
From: WEST
190E, C36, C55, CLK55, ML55
ZAYED, any thoughts on running the NGK 5553? FCPeuro offers them and I picked them up, planning on testing them out. I know longevity wise they won't last as long but any negatives performance wise? Or ill affects on coil packs? I plan on doing a video series on install and update reviews.
Thread Starter
Member
Joined: Nov 2018
Posts: 224
Likes: 59
From: WEST
190E, C36, C55, CLK55, ML55
That's what I assumed as well, they both have the same engine control system reports when using my scan tool however variances in canbus modules etc. Thx Zayed, will do!
Thread Starter
Member
Joined: Nov 2018
Posts: 224
Likes: 59
From: WEST
190E, C36, C55, CLK55, ML55
Follow up:
I installed the ngk bkr6es-11 standard plugs in the c55 today, no changes in performance or any parameters thus far.
will follow up with more info as mileage increases.
Plan to install bkr5es-11 for Ml55 soon also. YouTube videos on both will be posted to my channel.
cheers
I installed the ngk bkr6es-11 standard plugs in the c55 today, no changes in performance or any parameters thus far.
will follow up with more info as mileage increases.
Plan to install bkr5es-11 for Ml55 soon also. YouTube videos on both will be posted to my channel.
cheers
