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Oh and we haven’t found the culprit for the silicon. That’s been a mystery. As mentioned in that post air filters didn’t change the outcome. The trunk is tight and sealed as well.

Truck

You don’t shim the oil pump on a Detroit other than to get proper gear lash. The pump is already right at the end of the gear lash spec which I believe is .008 lash and I’m a smidge over that with no shims. Adding shims would increase the lash and you don’t want that. I did shim the pressure...

There is no consistency to the shearing. I’m sure you noticed some are 11.3 which I believe is a 10w30 viscosity correct? Also, I re read your post, what is your recommendation? I’ve already reduced intervals from 20k to 12-14k

I haven’t had a chance to check availability on it yet.

I would disagree. It is a good running engine but I did more with my old engine and never had oil shearing issues. A 14 liter engine came factory at 575hp ratings. Some even dynod from factory at close to 575 RWHP.

100% guess. 6-700 RWHP. Basing that off my old engine that was 540 and this engine runs substantially better.

You’re pretty close. I sent a virgin sample in, it’s starting around 14.5 shearing to 11-12, that may not seem like much, but it does it almost immediately after a change then gradual for the rest of the life of the oil. Since switching to Kendall it has been slightly better but still not...

That’s fine. Im sharing my second hand information just like your folks

Is there a difference in CF ratings for HD and non HD applications? I haven’t seen this oil locally but Walmart says my local Walmart has it

All American builds engines to Detroit specs and this is not. They’re really no help at all with this situation.

The engine has about 170k on it now. And it’s still shearing oil. I’ve had numerous UOA’s done which I can post from Blackstone and one from Polaris. The engine doesn’t have a dilution issue. So it seems to be coming down to heat even though the oil temps never go over 215 and that’s when the...

Most of these examples are in light duty configurations. What I have heard (second hand of course) is that the quality of shell isn’t there anymore for Long haul HD applications. They have referenced their base oil not being as good as it used to be. Again second hand so take it for what it’s...

Sorry I haven’t gotten any email alerts for responses. Yes both were blue jugs. Just a couple of them were the older style like 2020 square corner jugs and then the rest were newer rounded style jugs. Also, which seems odd, but when I fill the sump the level is usually just over full, this...

Changed oil yesterday and I had an older jug of chevron, maybe 6-8 months old and a newer jug, 3-4 months and they were completely different consistencies. The older oil was thicker and heavier. The older oil was in the old jug they been using for 20 years. The new oil was in the new style jug...

Maybe I'm thinking of something else cause now you mentioned it citgo jogged my memory. I'll see what I can find. I'm gonna call the engineer at my local lube shop too and see what he has to say also tomorrow.

I don't think I have a mystic dealer close. I've heard that they make some good products, but I've also heard it's made by smith's, is that right? I'm in NE-Ohio

Not opposed to it at all. But still tough to find in the north. I'm really open to ideas, including listening to HPL, but I like simplicity also. Last I talked to David, I had to call a lady, order it, had to be blended and then shipped. And if I recall it was an extremely high cost compared to...

14L, it's not a DD15. Still a series 60.

This engines factory setting is 575 1850 torque.