Dannyn_01
Member
- Joined
- Nov 25, 2019
- Posts
- 73
- Reaction score
- 80
- Location
- Long Island NY
- Ram Year
- 2015
- Engine
- HEMI 5.7
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looks incredible, I agree with blackstone with over 3 tbn and that low wear, you could extend. One well running hemi and one great oil paired up right there. It is nice when hemi'***** 100k, smooth sailing from here that engine!Just over 12K Miles running Amsoil SS 5W20 and SRT Filter.
The filter was shot after this run, I’ve since switched to the RP20-820. Not sure how long I should run the next OCI. What would you guys do here? Keep running the oil longer or keep it consistent? View attachment 473878
Redline 5w30 has an hths of 3.7, redline 0w30 has an hths of 3.4. Now, that is actually fairly huge difference in metal protection. HTHS means high temperature and high shear, because in an engine what shreads viscosity is more likely to be mechanical shearing then high temperature, because engines don't operate that hot generally speaking. Have you had any other oils in that engine, and how did they sound compared to what you have now and this run showing?
So there is science behind everything going on that makes sense, 20 weight is extremely stable, so even in a shearing engine you would not expect it to lose visc, so as you see that is high visc for 5w20, but 5w30 will shear some if you have some place mechanical shearing, it would show in your cSt numbers, and that makes sense as 0w30 could possible sound even worse then 5w20 because 0w30 is prone to shear more then other two oils.I don't know what I had in before the first UOA report, I think it was either RL 5w-20 and/or some other synthetic oil, and then the change before that was factory fill.
First UOA report is RL 5w-30
Second UOA report is RL 5w-20
Third UOA report is RL 5w-30
So the middle one was -20.
The best sounding was definitely the two 5w-30 runs. I think the 5w-20 was OK as well, I don't remember it having the light/dry lifter tick the 0w is giving me, it seemed to be a little smoother going in/out of MDS than the 5w-30 as well but I'm just going off the few times I forgot to disable that monkey business so I don't want to claim it as "definite".
As always I appreciate the insight you guys offer here! I'm quite happy to see the copper come down, I was worried about that after the middle run being so short, less than half the previous run but more than half the copper so it seemed that that run might be increasing the copper but it's definitely going down now!
I'm going to try and record the knocking I had with all oils to date on a cold start. Will post that in the syn thread once I get off my butt and actually record it on a cold frosty morning.
So there is science behind everything going on that makes sense, 20 weight is extremely stable, so even in a shearing engine you would not expect it to lose visc, so as you see that is high visc for 5w20, but 5w30 will shear some if you have some place mechanical shearing, it would show in your cSt numbers, and that makes sense as 0w30 could possible sound even worse then 5w20 because 0w30 is prone to shear more then other two oils.
The odd part would be that happened right away? The 0w30 sounded worse from day one? Because usually it would take a while for those vii's to shear. But, imo your next uoa would be pretty important, if what you say is happening matches a real low cSt, you could take it to the bank there is a real mechanical reason behind what is happening. Could be something out of tolerance that is rocking in the bore, that will shread oil visc and leave tick behind. Once you have that info you can fine tune your lubrication strategy. Let us know if it gets worse, which would be a possibility as vii's shear. It is also possible your EP additives will make it quieter in the coming weeks, seen that many times. How many miles on 0w30? How long before it sounded badly?
This is about as perfect of a uoa as you can get, and this from a hemi tick truck, nice. You are killing it long term man. what is up wit the visc, did you drop a qrt 5w40 in there? I don't even do uoa's anymore because im afraid of what ill see, lol.My UOA from this summer. 2 camping trips in the northern NH mountains where the oil sat at 240⁰ for longer than I liked. Plus some local camping trips. Considering the mileage on the truck and the oil, I'm happy with this UOA.
Also I didn't run the Filtermags on the filter this time. Seems to have 0 effect on iron levels.
View attachment 476254
Yeah considering everything that's happened I'm really pleased with that report.This is about as perfect of a uoa as you can get, and this from a hemi tick truck, nice. You are killing it long term man. what is up wit the visc, did you drop a qrt 5w40 in there?
Yeah considering everything that's happened I'm really pleased with that report.
Yeah idk what's up with that, it was 7.5 qts of RL 5w30 in April. If you look back at the previous reports, the last time the viscosity was that high was during my cross country towing trip. The oil got really hot then too...
Between 240⁰ to 245⁰What kind of temps were you seeing?