M1 EP 0W-20 7,242 miles 2014 GMC Sierra 5.3

gonefishing · Jul 1, 2015

Vehicle: 2014 GMC Sierra 1500
Engine: 5.3L V8 Ecotec3 (L83)
OCI: 7,242 miles
OLM: 5%
Oil: Mobil 1 Extended Performance 0W-20
Filter: Fram Ultra XG10575
Make up oil: none
Driving conditions: 80/20 (Highway/City) with some light trailering (maybe 500 miles)

First time using EP version of M1 0W-20. Doesn't really look much different the AFE version. I bought few 5 qt containers of EP when it was priced the same as AFE so I'll be running it for the next couple oil changes. Glad to see my iron went down from last sample. Not sure why it went up to begin with.

tig1 · Jul 1, 2015

The only thing I could add is a 10K OCI will work well for you.

userfriendly · Jul 1, 2015

Thank you for posting your XW20 results.
Now I know what I have been missing, and
will stick with XW40 in the 5.3 2013 and
future GM vehicles.

tig1 · Jul 1, 2015

And why would that be?

addyguy · Jul 1, 2015

For only 7k miles on a broken-in engine, those results are not great at all.

Can't prove it, but I don't doubt that engine would show less wear with a thicker oil, but GM has spec'd a 20-weight, so that is what it should get.

tig1 · Jul 1, 2015

Originally Posted By: addyguy
For only 7k miles on a broken-in engine, those results are not great at all.

Can't prove it, but I don't doubt that engine would show less wear with a thicker oil, but GM has spec'd a 20-weight, so that is what it should get.

As we know GM engines often show higher iron and copper than other makes of engines, but has nothing to do with decreasing the engine life. Also notice that this OCI is at least as good as the Univ average shown at the right of the report. Actually, this is a very good report for this type of engine, with Vis and Flash point holding very well. Could run 10K without a problem.

userfriendly · Jul 1, 2015

Absolutely.
GM has specified a XW20 so that is what it should get.

I would never recommend anything other than the manufacture, who designed, tested and warranties their vehicles.

robertcope · Jul 1, 2015

What's interesting to me is that the EP numbers don't differ from the AFE numbers, but this chart indicates that they ought to: https://mobiloil.com/~/media/amer/us/pvl/files/pdfs/mobil-1-oil-product-specs-guide.ashx

robert

Justin251 · Jul 1, 2015

Great. I'm running this in my hemi. So far so good with just over 6k on this oci.

Not gonna do a uoa but it seems to be real tough .

Oli20 · Jul 2, 2015

Thank you for posting, I'm also glad to see the Iron go back down. Very solid report in my opinion.

It is interesting that the EP appears so similar as the AFE

ltslimjim · Jul 2, 2015

The main difference between EP vs. AFE is the starting TBN.

wi11iam · Jul 2, 2015

looks like a lot of iron and copper at 41k miles but maybe this is normal for your specific motor? You should get a TBN next time to see how much additive life is left.

RationalRussian · Jul 2, 2015

Great report, really interesting that iron fell that much just from a switch to EP. Did you change your driving habits this OCI?

buster · Jul 2, 2015

Looks good. No oxidation and wear is fine. It's a GM engine, enough said. Highly doubt any other oil would look any different.

zuluplus30 · Jul 2, 2015

If you've seen one GM LS V8 UOA, you've seen them all. I'm with Buster. Wear looks fine. No need to recheck TBN/TAN. The run at 26K showed plenty of life at this interval.

2 things I'm happy about. Being this is GM's first attempt at a DI V8, the FP looks great and no trace of fuel which is astounding. Second, being they are down to 20W oils, the viscosity held fine and wear looks normal/consistent with every other previous generation LS motor.

I'd follow SteveSRT8's recipe for GM motors. Cheapest synthetic Dexos 0W-20 for the life of the OLM and enjoy it for the next 300-500K.

bigt61 · Jul 2, 2015

Very nice, everything looks great. The previous higher iron run is coming off a North Dakota winter, so that makes sense. Thanks for the post.

Rojack · Jul 5, 2015

Originally Posted By: Justin251
Great. I'm running this in my hemi. So far so good with just over 6k on this oci.

Not gonna do a uoa but it seems to be real tough .

Is it noisy?

Justin251 · Jul 6, 2015

The glasspack on the exhaust is.

No ticking no burning.

Rojack · Jul 10, 2015

How is changing oil on the Ram? Does the 14 require covering the steering box or pump or whatever to avoid a mess or is that different years?

53' Stude · Jul 10, 2015

Yep, requires covering the steering gear and 4x4 pumpkin. Messy to say the least

M1 EP 0W-20 7,242 miles 2014 GMC Sierra 5.3

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