From 5W-20 to 5W-30

[John Schmidt]

These newer Hemi's have more oil porting and require more oil to be dispersed to the top of your motor. MDS system and VVT . You ever wonder why they rev so high on start up, even on a hot day...this is why. They were designed that way and speced for 5W-20 not to cut down on production cost but so the oil can reach the top of the motor.

I've put a significant amount of research into the Hemi tick and it's still debatable. I'm convinced it's caused by the MDS system shutting down to four cylinders and to be more specific the MDS lifters them selves. I've recently done away with mine and went non MDS lifters and cam. The MDS lifters are designed differently because those cylinders shut down and are prone to failure.

I've also put alot of research into aftermarket pumps...high volume vs high pressure. Not going to get into, you can Google that for yourself. Seeing I had the motor apart I was definitely replacing the pump even at 60,000 miles. After researching it I decided that a new mopar pump was sufficient enough...although I was very disappointed when I got it and saw it was now manufactured in Korea.

Interesting that you're convinced MDS is the cause. I'm not an expert on this (either) but from my time reading, collecting data, etc. it appears that plenty of non-MDS 5.7L hemi engines suffer the same fate regarding hemi tick. Also, plenty of MDS engines with 200k+ miles and no issues. I'm leaning towards the quality of oil/filter, oil change interval, and accumulated idle time as potentially playing a role more than MDS. The geometry of the hemi engine itself also seems to be a weakness and (I believe) that geometry is the same on MDS or non-MDS. That weakness is especially significant at low idle. Many feel that 5w30 protects the engine better at higher temps/loads. But, I'll admit/agree there's no perfect, proven answer out there. My strategy is good oil (Red Line), good filter (RP or high end Fram), 3-4k oil change interval, and as close as possible to NO idling. Fingers crossed!!
John

 

[RamDiver]

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[Sherman Bird]

to mr sherman bird;
I dont begrudge anybody from making a liviing . But, When they try to bs me by saying i have to get the meling oil pump through them only and the cost is $400.00 and i cannot buy it from my supplyer even though you can get it from Meling on line for under $200. Dollars and they go on and on with their bs about other bs crap they have to supply and do. I don’t condifer that “making a living” i see thst as making a killing. So i really dont appreciate your wise crack remarks at the end of your post. If you dont have anything nice or constructive to say then dont say it.

You are correct... and I'm sure you're aware of the old "don't take your eggs to the diner and expect them to cook them for you" mantra.
Kudos to you or anyone for saving a buck; I do it too. But, the BS point you make is just that: BS.

My final point about this is: I never asked anyone to work for free, and never allowed an employer to do it to me (and many DID try it with me, thus my self employment).

 

[NBHICKSTER]

Wanted tp post my results going from 5W-20 to 5W-30 W oil. I also did a remote oil filter location after fabricating a bracket, along with a Formato quick drain valve. It drained slower but is cleaner and no tools involved.
I am using a Fram PH8A oil filter. It has a greater capacity the the original molar oil filter that is a little larger than a sewing thimble. The engine took 7 1/2 ouart's of Mobile 1 5W-30 w oil. 20W and 30W are the sam price at Walmart.

Before the change, my oil pressure at idle in park was 38-39 psi. And 51 at speed.
( all this was after engine was at normal operating temperature)
After the change my Idle is 45 psi and 49 in high gear at 60 mph. But when I get on the throttle to move faster the psi climbs to 57-59 psi until I let off or the truck shifts back in to high gear.

I used a Trans adapt remote filter housing and a Canton engine oil filter adapter 22-598 Remote oil filter adapter. It takes any filters that fit 3/4-16 oil Filters. The Engine is as quiet as a Rolex even at start up.

I did this mod because I do not want to encounter the "Hemi Tick" because a the crappy oil pump they used to save production costs. And believe it or not, I cannot find a decent mechanic or shop here in Apopka Florida that is willing to do an oil pump install of the new Meling oil pumps for less than $2,500.00
also I'm getting too old to be tearing down the front of my motor in the driveway. and dodging the HOA spy's.
Hopes this helps some one who's thing about this.

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What is the year of your Ram ???

 

[RamDiver]

What is the year of your Ram ???

He hasn't been seen for over 6 months, but according to his avatar, it is 2018.




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