From looking at this UOA, the SuperTech 20 weight conventional and the HPL 30 weight group III +AN + Ester seemed to be nearly identical in wear metals during the 2 extended oil changes.My most recent extended run in my 2018 Taurus n/a 3.5L. Typical mixed use; city and highway.
To help this make sense, here is an OCI history:
- at 1k miles, the oil/filter was changed with dino ST (first "break in" flush of the OEM machining remnants)
- at 5k miles, the oil/filter was changed with dino ST (second "break in" flush)
- at 10k miles, the oil/filter was changed with dino ST
- at 20k miles, the oil/filter was changed with dino ST
- at 32k miles, the oil/filter was changed with dino ST; first UOA on the 12k mile oil run, see below
- at 40k miles, the oil/filter was changed with HPL (no UOA on the 8k mile oil run)
- at 50k miles, the oil was left in but filter changed; second UOA with 10k mile oil run, see below
The shift to 30 grade HPL is merely a matter of coincidence; it was not a planned change- the oil came from the HPL openhouse last year.
* There are a few differences between the UOAs; first Blackstone and then WearCheck, so minor disparities should be ignored.
* Both the conventional ST and the premium HPL did very well at having low wear rates; a general trait of the Cyclone engines.
* The HPL is still in the engine; planning on running another 10k miles and then sample at 20k miles.
* The filter was changed at 51k miles (having 11k miles on the filter and HPL oil). There was absolutely no sludge or carbon of any kind in the filter after 11k miles; very clean running engines, these Cyclones! The filter was changed as a precaution to see how much contamination was present; none, essentially. That made me feel good about extending the OCI further. Had I known how good it was, I would have left it on there to 20k.
* Oil was topped off at 51k miles only to make up for the lost volume of the filter change. There was no appreciable oil loss during the 11k miles of use. The volatility of this HPL lube is incredibly low.
Rich (BB code):
Veh Miles 32k 50k OCI miles 11.8k 10k filter TG XG oil brand ST HPL oil grade 5w-20 5w-30 oil base conv grp III UOA svc Blkstn WrChk Oil chng? Yes No Filter chng? Yes Yes Alum 5 5 Chromium 0 0 Iron 9 8 Copper 6 4 Lead 0 0 Tin 0 0 Moly 39 479 Nickle 0 0 Manganese 3 2 Silver 0 0 Titanium 0 1 Potassium 0 1 Boron 42 21 Silicon 38 25 Sodium 3 4 Calcium 1396 1183 Magnesium 435 1857 Phos 758 648 Zinc 876 842 Barium 0 0 Vis at 100C 8.49 10.4 Flash Point 44 x Fuel <.5 <.1 Antifreeze 0 0 Water 0 0 Insols/soot .2 .1 Nitration x 16.9 Sulfation x 40.1 Oxidation x 39.6 Acid x 2.0 Base x 10.6
Unless you just hate to change oil, there is not evidence to show that HDL is worth the extra $$ over ST dino oil. Not looking at the 2 oil analysis. Not trying to start a fight with the HPL lovers out there, but this was my impression after looking at the 2 results Now if you are talking about a 20+k oci, that's different.I guess I'd say that my OCI extension goal is all of the above.
I'm a big propronent of getting a good ROI. To do so, you have to extend these lubes out to justify their costs. The HPL has an excellent cleaning additive package; that helps.
I like being able to show folks that their "cheap insurance" concepts regaring frequent OCIs is often just wasteful. Most of today's lubes (be they conventional or syn) are far more capable than most folks would believe.
I DO NOT advocate for blindly extending an OCI just upon my word. People need to investigate all the concerns and conditions going into a maintenance program for their equipment. Some vehicles and operational conditions do not lend themselves to longer OCIs; this isn't a one-size-fits-all approach I'm pushing for. What I'm trying to show people is that most any lube can easily go much further than you'd think and still safely protect an engine. The only way to know is to slowly stretch out the OCIs and then confirm engine health with UOAs, filter analysis, PC analysis, visual inspections, etc. One should NEVER just blindly double or triple an OCI as a guess.