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Hemi Idle hours

Inthehills said:
You fellows sure like to idle your Hemi’s.
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That’s so low it doesn’t even seem feasible.

I don’t let my rigs sit at idle. Sold the 22 at 11.2% and the 18 at 8.1%. The 22 definitely counted idle hours easier than the 18, but less than 4% is wild even with a 51mph average.
 
My truck doesn’t get driven much, usually only use it for towing or if I have to go somewhere that’s over 3 hours away… I didn’t think I idled it much until I actually looked at it, obviously counts all the time moving trailers around the yard and hooking up, not just sitting in park…IMG_3654.jpeg
 
gheck said:
I have always used the mopar srt filter since 1first oil change. It is a much better filter with a higher by pass valve plus the dealer said it will not affect warranty. I am courious I have used th PUP since new but was thinking switching to amsoil signature oil. Was there a difference ? PUP is good oil and on par with Amsoil signature.
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Never have had issues with Signature series. But, its strictly out of preference.
 
Inthehills said:
You fellows sure like to idle your Hemi’s.
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140 degree+ interior temperature definitely gets you sweaty after a 12-13 hour day. Truck sits in an uncovered parking lot or desert nearly 365. Before remote start, I could drive 5 to 10 miles before cool air is even felt. never really experienced sweating while sitting in a truck on full blast AC before until I got this truck. (Normally have had ventilated seats.)
 
BadKarma said:
I would also like to send another sample of oil to black stone. I use amsoil signature series and normally when I am roughly 5k in on an oil change, I notice the hemi tick. About a week ago I switched to pup. I believe this is the second time since owning the truck I’ve used PUP, this time around I wanted to see if it keeps the tick away longer or not to switch back to amsoil. my issue is pup takes a week to get and amsoil always over nights to my address. My next option would be to go a thicker viscosity due to the extreme temperatures here.

I believe last year we had a month straight of 110 or 115 or higher day time highs and over a month of 99 or higher.


But to answer your question, no real issues just trying to perfect something to my likening lol.
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Question for everyone. With regards to oil, does it matter what the outside temperature is? My experience is it doesn't. if it is 33 or 95 it warms up and stays at 200-210 oil temp.

Would there be a purpose to use a thicker oil in a 6.4? Older cars gave you a range of choices but Ram says (at least in 2024) 0w-40 with no other options.
 
When I bought my 2022 used in 2024 the idle hours and run time were almost 50/50, I've since improved that ratio somewhat but it's still close. I'm happy to report absolutely no issues and no tic whatsoever.
 

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I'm new to Ram and the Hemi tick, so don't light me up...

I have 6,200 miles on my 6.4 Hemi (its a 2024 Tradesman with Power Wagon package).

I just did my second oil change. I'm changing the oil every 3,000 miles. I'm using OEM filter and oil at least until the warranty is up.

Idle Hours: 25
Total Hours: 184
Percent idle time: 13.6%

One of my big causes of idle time is airing tires up after driving off road. I have an onboard air compressor, and need to leave the truck idling while its running.

Should I look into getting a tune, and bumping the idle up to 750-800 rpm, or should the oil change interval of 3,000 miles be enough preventative maintenance (assuming percent idle time doesn't change much).

Thanks.
 
You might want to use th SRT oil filter much better filtration and a bit larger oil capacity.
 
gheck said:
You might want to use th SRT oil filter much better filtration and a bit larger oil capacity.
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Thanks! I didn't even know that Mopar made a performance filter for the 6.4. My local dealer has a bad reputation for voiding warranty claims if anything other than OEM parts (including all lubricants) are used. I would assume that using the SRT would not be a problem - but I'll check with them. Appreciate the tip.
 
stickshifter said:
I'm new to Ram and the Hemi tick, so don't light me up...

I have 6,200 miles on my 6.4 Hemi (its a 2024 Tradesman with Power Wagon package).

I just did my second oil change. I'm changing the oil every 3,000 miles. I'm using OEM filter and oil at least until the warranty is up.

Idle Hours: 25
Total Hours: 184
Percent idle time: 13.6%

One of my big causes of idle time is airing tires up after driving off road. I have an onboard air compressor, and need to leave the truck idling while its running.

Should I look into getting a tune, and bumping the idle up to 750-800 rpm, or should the oil change interval of 3,000 miles be enough preventative maintenance (assuming percent idle time doesn't change much).

Thanks.
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How long is it taking you to air up? My ARB compressor on board my ram is plumbed all 3/8” push connect fittings and can air up a 40” in 3 min.
 
Rockcrawlindude said:
How long is it taking you to air up? My ARB compressor on board my ram is plumbed all 3/8” push connect fittings and can air up a 40” in 3 min.
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That is fast! I have a 12 volt twin ARB compressor - its about 9 months old, but its not the new "brushless" model. I'm not sure about the fittings, I'm just using the orange ARB hose and the ARB tire inflator that I bought in 2017 (photos below are from the internet today, but both items look just like the ones I bought in 2017). It takes me about five minutes to fill one 35-inch tire from 22 psi to 60 psi. Is there something I can do differently? Your 3/8" fittings might be bigger than mine, which might be 1/4" (but I'm not sure).

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stickshifter said:
That is fast! I have a 12 volt twin ARB compressor - its about 9 months old, but its not the new "brushless" model. I'm not sure about the fittings, I'm just using the orange ARB hose and the ARB tire inflator that I bought in 2017 (photos below are from the internet today, but both items look just like the ones I bought in 2017). It takes me about five minutes to fill one 35-inch tire from 22 psi to 60 psi. Is there something I can do differently? Your 3/8" fittings might be bigger than mine, which might be 1/4" (but I'm not sure).

View attachment 90363

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5 min each isn’t bad, when you said the majority of your idle time I was thinking you were spending an hour!
22-60 is a lot further than I go so 5 minutes is probably good time! I assumed an increase of about 20psi (maybe 20ish to 40ish psi on a HD)

Side note: Why on earth are you going to 60 psi??

The last one I timed was going from 5psi to 25ish psi on a Toyota
 
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Rockcrawlindude said:
5 min each isn’t bad, when you said the majority of your idle time I was thinking you were spending an hour!
22-60 is a lot further than I go so 5 minutes is probably good time! I assumed an increase of about 20psi (maybe 20ish to 40ish psi on a HD)

Side note: Why on earth are you going to 60 psi??

The last one I timed was going from 5psi to 25ish psi on a Toyota
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I'm inflating to factory specs: 60 psi for the front tires, 65 for the rear (if I don't have weight in the bed, I just go to 60 in the rear).

Here is my door sticker:

Door_Sticker.jpg

The specs for my tires are a max inflation of 65 psi (cold).

Are most folks running a lower psi? If so, about what psi? Last question: how are folks judging what psi is okay to run if the factory spec is 60/65?

I'm coming from Jeep Wranglers and Toyota Tacomas, so the world of HD trucks is new to me, as are these high psi factory specs.
 
stickshifter said:
I'm inflating to factory specs: 60 psi for the front tires, 65 for the rear (if I don't have weight in the bed, I just go to 60 in the rear).

Here is my door sticker:

View attachment 90379

The specs for my tires are a max inflation of 65 psi (cold).

Are most folks running a lower psi?
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Those pressures assume 2 things, 1st you're running stock sized tires, and 2nd your running at your GAWR's.

The most accurate way to inflate your tires is to weigh your vehicle and use the load/inflation charts to determine the proper pressure for the load.


35/60 is enough air for the PW GAWR's, but actual weights are better to use as a baseline. Even 60 on the stock tires is too much air for the FAWR of 4,750.
 
AH64ID said:
Those pressures assume 2 things, 1st you're running stock sized tires, and 2nd your running at your GAWR's.

The most accurate way to inflate your tires is to weigh your vehicle and use the load/inflation charts to determine the proper pressure for the load.


35/60 is enough air for the PW GAWR's, but actual weights are better to use as a baseline. Even 60 on the stock tires is too much air for the FAWR of 4,750.
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Thanks for sending this! A quick scan of this document indicates I should be running at 55 psi with my tires (315/70 R17 Load Range E), since the lower psi seems to be for different tires. But that was just based on skimming the document; I will spend more time reading through it later.

I'm driving a 2024 Tradesman with the Power Wagon (PW) package. The max. payload in the PW (1,591 pounds for my particular truck) is so low that I will never get anywhere close to my GAWR - right? I'm pretty sure that these are the same axles that are underneath a non-PW gas-powered (6.4 Hemi) Ram 2500, and the max. payload for a stripped down version of a gas-powered Ram 2500 is around 4,400 pounds. I have no plans to overload my suspension, so I should never get close to the GAWR. So I guess I need to figure out the right tire pressure for my current curb weight, and my GVWR, taking into account tire specs. For now, I'm going to drop them down to 55 psi, and do a little homework.
 
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