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Red Line 15W50, 6k mi OCI, 75k mi, Cadillac CTS-V #4580528
11/20/17 10:06 PM
11/20/17 10:06 PM
Joined: Apr 2013
Posts: 144
GTA, Canada / NYC
Emperors6 Offline OP
Emperors6  Offline OP

Joined: Apr 2013
Posts: 144
GTA, Canada / NYC
All mileage is in kilometres. OLM was at 21%.

Notes from oil slip: RL 15W50 for summer due to track (ab)use, top-up oil: 1qt of RL 15W50. Will switch to 5W30 for winter. 18hrs of track use on oil.

Previous fill was also RL 15W50.



2013 Cadillac CTS-V
Re: Red Line 15W50, 6k mi OCI, 75k mi, Cadillac CTS-V [Re: Emperors6] #4580565
11/20/17 10:41 PM
11/20/17 10:41 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline

Joined: Jan 2007
Posts: 17,501
Clovis, CA
Is 15W50 the factory recommended viscosity ?

Re: Red Line 15W50, 6k mi OCI, 75k mi, Cadillac CTS-V [Re: Emperors6] #4580571
11/20/17 10:42 PM
11/20/17 10:42 PM
Joined: Apr 2013
Posts: 144
GTA, Canada / NYC
Emperors6 Offline OP
Emperors6  Offline OP

Joined: Apr 2013
Posts: 144
GTA, Canada / NYC
Nope, but similar engines do recommend 15W50 for track use.

Re: Red Line 15W50, 6k mi OCI, 75k mi, Cadillac CTS-V [Re: Emperors6] #4580572
11/20/17 10:45 PM
11/20/17 10:45 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline

Joined: Jan 2007
Posts: 17,501
Clovis, CA
I can tell you right now that 15W50 is not working. Too much iron and too much aluminum.

Re: Red Line 15W50, 6k mi OCI, 75k mi, Cadillac CTS-V [Re: Emperors6] #4580578
11/20/17 10:50 PM
11/20/17 10:50 PM
Joined: Apr 2013
Posts: 144
GTA, Canada / NYC
Emperors6 Offline OP
Emperors6  Offline OP

Joined: Apr 2013
Posts: 144
GTA, Canada / NYC
Check my history. I got same iron wear numbers in 11/7/2016 and I was running RL 5W30 then. As for the aluminum that's new. I'll see how it develops. Then, what do you recommend doing about the elevated oil temperatures I am seeing on the track? It goes up to 265F. 5W30 would be too thin for that.

Re: Red Line 15W50, 6k mi OCI, 75k mi, Cadillac CTS-V [Re: Emperors6] #4580594
11/20/17 11:13 PM
11/20/17 11:13 PM
Joined: Jul 2017
Posts: 542
Texas (south)
FermeLaPorte Offline
FermeLaPorte  Offline

Joined: Jul 2017
Posts: 542
Texas (south)
Seems like you gotta switch brands to see if the problems are only brand-specific


Always Mobil 1
2014 1.6L Nissan Versa Sedan, 5 spd, 5k OCI.
2011 3.5L Chevrolet Impala, Automatic, 5k OCI.
Re: Red Line 15W50, 6k mi OCI, 75k mi, Cadillac CTS-V [Re: Emperors6] #4580621
11/21/17 12:58 AM
11/21/17 12:58 AM
Joined: Sep 2004
Posts: 8,011
Marshfield , MA
andyd Offline
andyd  Offline

Joined: Sep 2004
Posts: 8,011
Marshfield , MA
I would fit an oil cooler on a thermostat. Maybe same for the transmission if you race it, Does this engine have short piston skirts?


'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2
Re: Red Line 15W50, 6k mi OCI, 75k mi, Cadillac CTS-V [Re: Emperors6] #4580628
11/21/17 01:14 AM
11/21/17 01:14 AM
Joined: Sep 2015
Posts: 6,175
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline

Joined: Sep 2015
Posts: 6,175
Kalifornia Kollective
It's not likely to be brand related. I suspect too much "oil friction" in the bearings leading to the elevated temps. I'd drop back to a 0W-40 and see what the numbers do ... RL would be good as you'll still track the car I'm betting laugh

The aluminum is almost certainly piston skirt material. I suspect that the timing could loose 1 or 2 degrees and save you some piston skirt wear smile


Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
Re: Red Line 15W50, 6k mi OCI, 75k mi, Cadillac CTS-V [Re: Emperors6] #4580638
11/21/17 02:12 AM
11/21/17 02:12 AM
Joined: May 2015
Posts: 998
Brittany / Canada
Popsy Offline
Popsy  Offline

Joined: May 2015
Posts: 998
Brittany / Canada
+1 Iíll try a xxW40.


96 Barchetta, 300V 5W40 | Forfour 95, SHU 0W40
Mazda 6 2.3, M1 AFE 0W20 | Colt Ralliart, 300V 0W40
Re: Red Line 15W50, 6k mi OCI, 75k mi, Cadillac CTS-V [Re: Emperors6] #4580640
11/21/17 02:28 AM
11/21/17 02:28 AM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline

Joined: Jan 2007
Posts: 17,501
Clovis, CA
You said 2013 correct ?

Factory says:
2013 CADILLAC CTS 6.2L 8 -cyl Engine [P] LSA
VISCOSITIES:
All TEMPS....5W-30
Below -20 F .0W-30
CAPACITIES: With filter 6 quarts After refill check oil level.
TORQUES: Oil Drain Plug...18 ft/lbs
NOTES: (1) This specification has been updated from Dexos 1 (Dexos:2010) to Dexos1 Gen 2 (Dexos:2015)


^Amsoil

Try some 5W-30 Castrol Magnatec!

Re: Red Line 15W50, 6k mi OCI, 75k mi, Cadillac CTS-V [Re: Emperors6] #4580659
11/21/17 03:49 AM
11/21/17 03:49 AM
Joined: Jun 2003
Posts: 2,817
BC, Canada
userfriendly Offline
userfriendly  Offline

Joined: Jun 2003
Posts: 2,817
BC, Canada
Aluminum block, aluminum heads & aluminum in the used oil. Prove that the aluminum in the oil is a wear metal.

Re: Red Line 15W50, 6k mi OCI, 75k mi, Cadillac CTS-V [Re: userfriendly] #4580675
11/21/17 04:55 AM
11/21/17 04:55 AM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline

Joined: Jan 2007
Posts: 17,501
Clovis, CA
Originally Posted By: userfriendly
Aluminum block, aluminum heads & aluminum in the used oil. Prove that the aluminum in the oil is a wear metal.


It's the other wear metals being elevated that point to the aluminum as being a wear metal. If the copper and iron were both near zero, then you could say the aluminum is from the engine getting dissolved by the oil.

Re: Red Line 15W50, 6k mi OCI, 75k mi, Cadillac CTS-V [Re: Emperors6] #4580762
11/21/17 08:35 AM
11/21/17 08:35 AM
Joined: Apr 2013
Posts: 144
GTA, Canada / NYC
Emperors6 Offline OP
Emperors6  Offline OP

Joined: Apr 2013
Posts: 144
GTA, Canada / NYC
The other wear metals do not look elevated. Check my posting history. If you go back far enough you'll see I was using a different oil in early 2016. The only one of concern is the aluminum. Even the iron last time is not out of the question due to the track use and it's reached that level before.

Re: Red Line 15W50, 6k mi OCI, 75k mi, Cadillac CTS-V [Re: Emperors6] #4581024
11/21/17 01:53 PM
11/21/17 01:53 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline

Joined: Jan 2007
Posts: 17,501
Clovis, CA
Have you done a test with 5w-30 ? I think 5W-30 would be good to establish a base line for comparing the test results of other viscosities to.

Re: Red Line 15W50, 6k mi OCI, 75k mi, Cadillac CTS-V [Re: Emperors6] #4581025
11/21/17 01:56 PM
11/21/17 01:56 PM
Joined: Apr 2013
Posts: 144
GTA, Canada / NYC
Emperors6 Offline OP
Emperors6  Offline OP

Joined: Apr 2013
Posts: 144
GTA, Canada / NYC
Yes, I've used 5w30 except for the last two UOAs. You can check the titles of my started threads here: https://bobistheoilguy.com/forums/ubbthreads.php/ubb/userposts/view/started/id/55846

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