Mobil 1 5W30 UOA; 6856mi in 05 Kia Spectra

[crosseyedwx]

This is my first car UOA (I posted one for my scooter late last year). Oil is M1 5W30, ST 3593A filter, K&N panel air filter. It was in service for 4 1/2 months. Mileage at change was 51,733mi.

A few short trips, about 2500 highway miles, and used in town a few mornings for my paper delivery route on cold mornings (normally use my scooter). No oil added over interval, consumed maybe 0.2 qt, no other additives. I was happy with the result, and refilled with my remaining 4.2qt of M1 5W30.

I'll admit I was getting a little antsy about a week before I decided to change it. This will put me changing the oil at the same time I do the 60k mi service for the timing belt change.

 

[buster]

Oil is now a 5w20. Fe is a tad high, but not bad. Short trip driving will put more fuel in the oil.

You might want to try Valvoline Synpower.

 

[crosseyedwx]

Synpower is the next oil going in after this fill is dumped (thanks to the $10 rebate). 5W20 is okay by me since the car is also spec'ed for 5W20, not really concerned with that (but I agree it should not be shearing like that). I also have a jug of YB 5W20 lined up for use eventually.

 

[CATERHAM]

I too am not impressed with the oil shearing down to a 20 grade.
I'm pretty much convinced that M1 5W-30 is no longer GP IV based.
How it meets the GM (Corvette) 4718M spec escapes me. Perhaps almost 7000 miles is too long an interval.

 

[buster]

IMO, M1 quality dropped when they went to two Mobil 1's.

 

[crosseyedwx]

Originally Posted By: buster
IMO, M1 quality dropped when they went to two Mobil 1's.


I would agree. I just couldn't pass up a few 5qt jugs when a nearby Wallyworld had them on sale for $15 a few months back. The last of it is in my car now, and I probably won't go back, unless I try the AFE with the $10/5qts rebates in April.

 

[Spykem4e]

Originally Posted By: CATERHAM
I too am not impressed with the oil shearing down to a 20 grade.
I'm pretty much convinced that M1 5W-30 is no longer GP IV based.
How it meets the GM (Corvette) 4718M spec escapes me. Perhaps almost 7000 miles is too long an interval.


+10000

Same thing happen on my UOA on my cadillac. the oil sheared down to a 20 grade after 10k. I think Mobil did falls from Group IV

 

[JoeFromPA]

I'd expect this type of oil report from a cheap conventional oil, not a semi-pricey synthetic....

 

[FZ1]

7k max oci.

 

[tig1]

Nice wear numbers. As we know iron is almost meaningless. As usual bearing wear is almost non existant with M1. Good TBN.No problem with 8 to 10,000 OCI.