Some 3.0 n00b questions

[dopestoinfinity]

Huge thx to everyone who gave me some fantastic advice in my other thread about DPF regen cycles, got a ton of helpful responses & DM's. I'm trying to be proactive about making this engine last.

My Situation:

• I just upgraded to this 2021 JLU from a 2016 JKU.
• It was a leased vehicle and the previous dealer had to replace the Long Block, DPF, and Fuel Pumps at 56k miles in May.
• Currently assuming the original fuel injectors were transferred over.
• The new engine/DPF have less than 500 miles on them right now.

Given this setup (new engine + old injectors + city driving), I'm looking for some short-term & long-term advice:

1. Injector Cleaner (Main Question): Should I run a cleaner (Archoil AR6400-D or Opti-Lube Diesel Clean) right now? In case the injectors are dirty, but I also don't want to harm the brand-new DPF.
2. Proactive Component Cleaning: Is it worth diving in and checking out the MAF sensor, MAP sensor, and EGR pipe? Should I leave them alone and/or assume they might have been cleaned during the troubleshooting/engine replacement process?
3. Daily Fuel Additives: I've read about these until my eyes hurt. For a city-heavy cycle what might be best? I can get Hot Shots, Opti-Lube and Archoil Products locally.
4. Warm-Up / Cool-Down: Best practices for warm-up & cool-down (especially after a long drive or regen)? Currently monitoring with a Scangauge 3.

Much appreciated!

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[cnapierala]

1. Injector Cleaner (Main Question): Wouldnt hurt. I believe its best to do this right before an oil change which is what i have done.
2. Proactive Component Cleaning: Ill let others chime in on this one.
3. Daily Fuel Additives: I have been using Archoil and think it is a good practice especially for your high pressure fuel pump.
4. Warm-Up / Cool-Down: I take it easy on mine until its warmed up. For cool down. I like to let the post turbo EGT get down into the mid 400's.

 

[dopestoinfinity]

1. Injector Cleaner (Main Question): Wouldnt hurt. I believe its best to do this right before an oil change which is what i have done.
2. Proactive Component Cleaning: Ill let others chime in on this one.
3. Daily Fuel Additives: I have been using Archoil and think it is a good practice especially for your high pressure fuel pump.
4. Warm-Up / Cool-Down: I take it easy on mine until its warmed up. For cool down. I like to let the post turbo EGT get down into the mid 400's.

Thank you!

 

[flick2614]

I'm wondering if you got one that the recalled fuel pump grenaded on if the Long Block was replaced. Checking out the EGR will be interesting and probably worth it. I use Archoil for the lubricity and ease of use; haven't had any issues.

 

[dopestoinfinity]

I'm wondering if you got one that the recalled fuel pump grenaded on if the Long Block was replaced. Checking out the EGR will be interesting and probably worth it. I use Archoil for the lubricity and ease of use; haven't had any issues.

I wondered that too but the fuel pump recall was done on it in 2022, I talked to the service advisor who checked the vehicle in at the dealership and he said the lessee dropped it off and the engine was having a hard time staying on while idling, so they replaced the fuel pump again and tried some troubleshooting + got it to stay on/idle a bit better but they determined it needed a new Long block for whatever reason

 

[dopestoinfinity]

1. Injector Cleaner (Main Question): Wouldnt hurt. I believe its best to do this right before an oil change which is what i have done.
2. Proactive Component Cleaning: Ill let others chime in on this one.
3. Daily Fuel Additives: I have been using Archoil and think it is a good practice especially for your high pressure fuel pump.
4. Warm-Up / Cool-Down: I take it easy on mine until its warmed up. For cool down. I like to let the post turbo EGT get down into the mid 400's.

Thank you for the input! Love this community

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