5w 20 or 5w30

Wild one · Jan 30, 2023

DA Smith said:
Interesting thing to me about the oil debate is this, my fifth gen Ram 5.7 Hemi calls for 5w 20 my Challenger 6.4 392 SRT calls for 0w 40. I noticed in the thread that someone has a 2500 6.4 Ram that runs 5w 30 I believe. I know that the 6.4 truck engine is surely built stronger internally than the SRT Challenger but why the different oil recommendations. I use mobil one 0w 40 for my Challenger and 5w 20 Penzoil in my Ram, they both preform well.

The 6.4 trucks also call for for 0W-40 ,but some guys are using 5W-30 with good results in their 6.4 trucks. I think Redline 5W-30 is what a few guys are using in the 6.4,but don't quote me on that.Once my wifes 6.4 Challenger is done with the dealer oil changes (1 more to go) i think i'll start using 5W-30 Redline in it.

HEMIMANN · Jan 30, 2023

ramffml said:
SO many people seem to think engineers only have a single priority and mission (longevity) and can't possibly be influenced by other requirements.

Fixed that for ya.

Well, they can - but they'll be fired. I recall a couple of those honest types that got let go.

HEMIMANN · Jan 30, 2023

Wild one said:
The 6.4 trucks also call for for 0W-40 ,but some guys are using 5W-30 with good results in their 6.4 trucks. I think Redline 5W-30 is what a few guys are using in the 6.4,but don't quote me on that.Once my wifes 6.4 Challenger is done with the dealer oil changes (1 more to go) i think i'll start using 5W-30 Redline in it.

Yup - that's me!

Hemi395 · Jan 30, 2023

Having worked for a corporate company for 15 years and having first hand experience with this, engineers have little say in the final product. After the finance/marketing/executive people have their say, the product has been cheapened and quality has been reduced to a bare minimum to compete with the competition while making a profit. Thats the corporate formula in a nutshell. Then you have shareholders which is a whole other discussion.

Back on topic, car manufacturers are under HUGE pressure from the EPA to get even a fraction of a percent of a MPG more out of their vehicles. Anything they can do to get that they will do. 5w20 oil is one of the ways they get that fraction of a percent. Same thing with MDS. I've been running 5w30 and 0w40 in my truck for tens of thousands of miles without issue. The motor just sounds quieter overall on 5w30 or 0w40 and MDS still works flawlessly on both those oils despite the owners manual saying otherwise.

Do yourself a favor if you plan on keeping the truck, run at least 5w30 in it.

Sherman Bird · Jan 31, 2023

DA Smith said:
I know that the 6.4 truck engine is surely built stronger internally than the SRT Challenger but why the different oil recommendations. I use mobil one 0w 40 for my Challenger and 5w 20 Penzoil in my Ram, they both preform well.

Says Who? In decades gone by, GM built "010" (010 was embossed on the top, rear of the block adjacent to the transmission mounting surface)engine blocks (The venerable small block 350) which indicated 2 things: One was that it was a 4 bolt main engine as compared to the :standard" 2 bolt main... and that the cast iron was "Nodular" cast iron, a stronger rendition of casting. Racers revered those engines.

Perhaps FCA has done some same diligence in their manufacture... I do not know. My guess would tend toward a difference in cam design and perhaps a difference in emissions compliance.

dls56 · Jan 31, 2023

My solution was to use 5-20 PUP full synthetic with a can of BG MOA and I change it at 50% life. Just rolled 70k yesterday, no tick and carries the same oil pressure it did with 100 miles on it. I dropped the factory oil at around 700 miles and have used the afore mentioned since. My recommendation is do what seems right to you not someone else.

Sherman Bird · Jan 31, 2023

dls56 said:
My solution was to use 5-20 PUP full synthetic with a can of BG MOA and I change it at 50% life. Just rolled 70k yesterday, no tick and carries the same oil pressure it did with 100 miles on it. I dropped the factory oil at around 700 miles and have used the afore mentioned since. My recommendation is do what seems right to you not someone else.

BG makes very good stuff. I use it in both by own cars AND my customers' cars. When begun early, BG puts their money where their mouth is. They have a warranty program that pays a portion (usually about 50%) of repairs to covered systems. (cooling, brake hydraulics, engines, differentials, transmissions for example).

I have direct knowledge in that they paid on claims in my shop over the years. This is NOT a plug for them.... just truth as I have witnessed.

AND!... your statement that YOU started doing this when the truck was new furthers my own experiences; where I turned down the "free" oil changes the dealer offered at finance on the new vehicles I've purchased over the years, and did them myself.

Gerald Sheppard · Jan 31, 2023

I bought my 08 Hemi Ram from Copart 4 1/2 years ago with 89k on it. No idea what king or how old the oil was, but would tick maybe 3 times on startup and stop. Changed to 5-20 Amsoil and quiet as can be. Went to 5-30 last Fall, no difference I can tell. Don't believe anyone that says Amsoil will cause a tick.

GaryalpUSA · Jan 31, 2023

Im a nut case old guy, after reading about the lifter problems with the 5.7 hemis, 16 2500 5.7 , I read a bunch about low idle oil pressure. I dont care about a mile or two of mileage and last oil change went with synthetic 10-30. I'm in so florida and we still get 80 85 days this time of year. My idle oil pressure is never less than 45 psi. I have also not noticed any difference with the performance of my 5.7 with this thick oil. my truck has 96k on it and I just did the exhaust manifold bolt repair. anyway, put any oil you want in it. As long as it has the proper SAE rating it is good to go.

ramffml · Jan 31, 2023

Gerald Sheppard said:
I bought my 08 Hemi Ram from Copart 4 1/2 years ago with 89k on it. No idea what king or how old the oil was, but would tick maybe 3 times on startup and stop. Changed to 5-20 Amsoil and quiet as can be. Went to 5-30 last Fall, no difference I can tell. Don't believe anyone that says Amsoil will cause a tick.

You're not even running the same engine as us. As a general rule, your engine doesn't get the classic "hemi tick". Gen 2's just have to worry about lifting valve seats.

Daniel Ortiz · Jan 31, 2023

Wild one said:
The note at the bottom might interest you.

Rick, can you tell me what year was that Ram 1500 Owners Manual from?

Sherman Bird · Jan 31, 2023

Whiskerfish said:
I did not stay at a holiday in express last night and I am not an oil expert, my question is "are these engines prone to oil related problems/ failures?"
I see a lot of discussion regarding types and viscocity of oils. I see the same thing on my Motorcycle site and the bikes we focus on have extremely low incidence of oil related issues.

This kind of banter about oils, filters, etc. has gone on for as long as I can remember! Back in the '80s, I owned a large successful shop. One of my technicians hailed from "West, By God, Virginia"! He and I were going at it over oil weights, and such.... He put me on my butt one day when we were going back and forth over it. He said "Bacon grease is good enough"!!!

I don't know, but he might have been on to something!

Wild one · Jan 31, 2023

Daniel Ortiz said:
Rick, can you tell me what year was that Ram 1500 Owners Manual from?

It's from my 14 Daniel

MontanaHandyman · Jan 31, 2023

Wild one said:
The note at the bottom might interest you.

In that footnote, what specifically do the Fiat oil specs refer to...

Wild one · Jan 31, 2023

MontanaHandyman said:
In that footnote, what specifically do the Fiat oil specs refer to...

Have to ask the oil experts on here what they're referring to,or google

Fiat Oil Specifications - oilspecifications.org

www.oilspecifications.org

fiat 9.55535-s3 specification - Google Search

JHoward · Jan 31, 2023

Wild one said:
Have to ask the oil experts on here what they're referring to,or google

Fiat Oil Specifications - oilspecifications.org

www.oilspecifications.org

fiat 9.55535-s3 specification - Google Search

?

Wild one · Jan 31, 2023

JHoward said:
?

???

JHoward · Jan 31, 2023

Wild one said:
???

Fiat Oil Specs ... for RAM trucks?

HEMIMANN · Jan 31, 2023

JHoward said:
Fiat Oil Specs ... for RAM trucks?

FCA = Fiat Chrysler America. Remember when Fiat bought Chrysler out of bankruptcy after the Great Recession? Yeah - they called all the shots from there out. They were in bed with European everything, including Royal Dutch Shell and their own parts - Marla Magneto, or whatever they call it.

Now Peugeot is in on the gig, and the Euro-design-by-committee will surely produce a desirable vehicle for North American use.

ramffml · Jan 31, 2023

HEMIMANN said:
FCA = Fiat Chrysler America. Remember when Fiat bought Chrysler out of bankruptcy after the Great Recession? Yeah - they called all the shots from there out. They were in bed with European everything, including Royal Dutch Shell and their own parts - Marla Magneto, or whatever they call it.

Now Peugeot is in on the gig, and the Euro-design-by-committee will surely produce a desirable vehicle for North American use.

A bunch of us need to get together and buy out Ram and Jeep. The rest can drown as far as I'm concerned.

I got the first 5 bucks, whose with me?

5w 20 or 5w30

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