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#4459924 - 07/15/17 08:38 AM 2017 Focus RS - Castrol 0W40 - 4,500 miles
wi11iam Offline


Registered: 01/14/15
Posts: 69
Loc: Massachusetts
Attached is my latest UOA. Notes around this OCI - Normal commuter miles + 1 auto-x day. Previous Oil was the FF which should be Motorcraft 5w-50 but looks like it sheared down way too much. Refilled with Castrol 0W40 as it seems to be a pretty robust oil and is doing a great job on my car.


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#4459938 - 07/15/17 09:01 AM Re: 2017 Focus RS - Castrol 0W40 - 4,500 miles [Re: wi11iam]
zeng Offline


Registered: 09/01/15
Posts: 2189
Loc: Malaysia
Nice breaking-in.
Oil still serviceable, OCI could be extended beyond 6.5k miles.
Thanks for sharing.

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#4459944 - 07/15/17 09:07 AM Re: 2017 Focus RS - Castrol 0W40 - 4,500 miles [Re: wi11iam]
pbm Offline


Registered: 04/19/04
Posts: 7606
Loc: New York
Nice car...nice oil...

It's a lucky guy that gets to 'commute' in a new Focus RS....
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'Journalism is Dead'

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#4459955 - 07/15/17 09:17 AM Re: 2017 Focus RS - Castrol 0W40 - 4,500 miles [Re: wi11iam]
CT8 Offline


Registered: 10/09/14
Posts: 11003
Loc: Idaho
Calcium 2400 on factory oil and Castrol 0W-40 ! Fords aren't into Dexos1 second generation.
_________________________
"Don't let your preconceived notions get in the way of facts."
Geoff Metcalf

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#4459959 - 07/15/17 09:24 AM Re: 2017 Focus RS - Castrol 0W40 - 4,500 miles [Re: pbm]
wi11iam Offline


Registered: 01/14/15
Posts: 69
Loc: Massachusetts
Originally Posted By: pbm
Nice car...nice oil...

It's a lucky guy that gets to 'commute' in a new Focus RS....


Thanks! I should note that even when I am "communting" this car gets driven pretty hard.. It's really hard not to, this thing is just way too fun. Of course, always obeying the speed limits and looking out for the safety of others.

I think Castrol 0W40 is pretty underrated and under-used around here, not sure why, as it is a stout oil with great mfr. certifications. Hoping to shed some more light on this oil and how it keeps up with further OCIs.

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#4459960 - 07/15/17 09:25 AM Re: 2017 Focus RS - Castrol 0W40 - 4,500 miles [Re: CT8]
wi11iam Offline


Registered: 01/14/15
Posts: 69
Loc: Massachusetts
Originally Posted By: CT8
Calcium 2400 on factory oil and Castrol 0W-40 ! Fords aren't into Dexos1 second generation.


What do you mean?

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#4459964 - 07/15/17 09:27 AM Re: 2017 Focus RS - Castrol 0W40 - 4,500 miles [Re: wi11iam]
69GTX Offline


Registered: 09/23/15
Posts: 3815
Loc: Connecticut
Nice OCI. My only comment is that I'm surprised the viscosity dropped from 13.2 (est) to 11.27 in only 4500 miles. That's more of a shear than the other thread with M1 0w-40 FS in a BMW with 4,000 miles (11.6).

The Castrol Edge 0w-40 is confusing me. I had always assumed ALL the major mfg 0w-40 A3/B4 oils were basically high calcium, little to no magnesium. All the VOA/UOA's I reviewed proved it. It was that way a couple of years ago. I did some detailed searches for Castrol UOA/VOA's on the 0w-40 and the recent ones showed a change from high calcium/low magnesium to medium calcium/medium magnesium (500 ppm). I purged my recent Castrol Edge 0w-40 purchases because of that.

Now I see that the OP's fresh UOA shows high calcium/low magnesium. It doesn't make sense. In going back to recheck those UOA's/VOA's, many or most are gone as they were photobucket links. I guess I will just remain confused. Castrol has shifted back and forth on magnesium oils in their 20/30 grades. I can only assume they also do this on some higher grades.
_________________________
----------------

2001 Lincoln Cont 4.6L DOHC/ 39K mi / QS HM 5w30 / FUG XG2
1999 Camaro SS M6 /19K /Mobil 1 0w40 /Fram UG /GM MTL-ATF
1969 Ply GTX/RRs

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#4459983 - 07/15/17 09:56 AM Re: 2017 Focus RS - Castrol 0W40 - 4,500 miles [Re: 69GTX]
kschachn Offline


Registered: 12/26/05
Posts: 9416
Loc: Upper Midwest
With Blackstone, it is difficult to determine whether a viscosity loss is due to shearing or fuel dilution. I don't trust their interpreted number for fuel and I don't think I trust their number for flash point either.

Originally Posted By: 69GTX
Nice OCI. My only comment is that I'm surprised the viscosity dropped from 13.2 (est) to 11.27 in only 4500 miles. That's more of a shear than the other thread with M1 0w-40 FS in a BMW with 4,000 miles (11.6).
_________________________
1994 BMW 530i, 227K
1996 Honda Accord, 262K
1999 Toyota Sienna, 394K
2000 Toyota ECHO, 267K

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#4459987 - 07/15/17 10:08 AM Re: 2017 Focus RS - Castrol 0W40 - 4,500 miles [Re: wi11iam]
oil_film_movies Offline


Registered: 06/13/16
Posts: 2569
Loc: MN
Originally Posted By: wi11iam
Originally Posted By: CT8
Calcium 2400 on factory oil and Castrol 0W-40 ! Fords aren't into Dexos1 second generation.
What do you mean?

Not clear what he is trying to say, is it? Clear communication is better in these forums. Wish everybody would learn that.
Just that dexos1 Gen2 specs have a low speed, high load, pre-ignition (LSPI) test which is usually solved by using mostly overbased Mg detergents instead of the Ca detergents we see in the 0w40 and 5w50.

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#4459989 - 07/15/17 10:09 AM Re: 2017 Focus RS - Castrol 0W40 - 4,500 miles [Re: wi11iam]
CT8 Offline


Registered: 10/09/14
Posts: 11003
Loc: Idaho
Originally Posted By: wi11iam
Originally Posted By: CT8
Calcium 2400 on factory oil and Castrol 0W-40 ! Fords aren't into Dexos1 second generation.


What do you mean?
There is a big thing about Calcium causing low-speed pre-ignition . Seems that Ford is not worried that much.
_________________________
"Don't let your preconceived notions get in the way of facts."
Geoff Metcalf

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#4459996 - 07/15/17 10:15 AM Re: 2017 Focus RS - Castrol 0W40 - 4,500 miles [Re: 69GTX]
car51 Offline


Registered: 03/12/15
Posts: 10257
Loc: Southwest PA
Originally Posted By: 69GTX
Nice OCI. My only comment is that I'm surprised the viscosity dropped from 13.2 (est) to 11.27 in only 4500 miles. That's more of a shear than the other thread with M1 0w-40 FS in a BMW with 4,000 miles (11.6).

The Castrol Edge 0w-40 is confusing me. I had always assumed ALL the major mfg 0w-40 A3/B4 oils were basically high calcium, little to no magnesium. All the VOA/UOA's I reviewed proved it. It was that way a couple of years ago. I did some detailed searches for Castrol UOA/VOA's on the 0w-40 and the recent ones showed a change from high calcium/low magnesium to medium calcium/medium magnesium (500 ppm). I purged my recent Castrol Edge 0w-40 purchases because of that.

Now I see that the OP's fresh UOA shows high calcium/low magnesium. It doesn't make sense. In going back to recheck those UOA's/VOA's, many or most are gone as they were photobucket links. I guess I will just remain confused. Castrol has shifted back and forth on magnesium oils in their 20/30 grades. I can only assume they also do this on some higher grades.


I'm sure they have a very good reason for this. Same as a Valvoline using sodium and organic and non metallic additives. I'm not worried about using Castrol oils


Edited by car51 (07/15/17 10:15 AM)
_________________________
2009 Toyota Camry LE

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#4460031 - 07/15/17 11:03 AM Re: 2017 Focus RS - Castrol 0W40 - 4,500 miles [Re: wi11iam]
aquariuscsm Online   content


Registered: 12/30/06
Posts: 18176
Loc: Dallas,Tx USA
I'd give Edge 5W50 a try in that car.
_________________________
1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Quaker State Ultimate Durability 10W30
2012 Honda Accord Coupe EX-L 2.4,auto,San Marino Red
Pennzoil Platinum 0W20



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#4460050 - 07/15/17 11:19 AM Re: 2017 Focus RS - Castrol 0W40 - 4,500 miles [Re: wi11iam]
dgunay Offline


Registered: 12/05/14
Posts: 612
Loc: Toronto
Impressive result for only 7k miles on the engine, and it's a really nice car. Enjoy!

I had a chance to test drive the RS for a week, it's really fun except the seats, they are a little bit narrow for my butt (6'1" 230 lbs).
_________________________
2009 Acura CSX (K20Z2 Auto)
PUP 5w30 / M1-110 / Maxlife ATF
Koni STR.T Struts / Tein S-Tech Springs / 20mm OEM RSB
Cooper Zeon RS3-A / Continental WinterContact SI

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#4460054 - 07/15/17 11:22 AM Re: 2017 Focus RS - Castrol 0W40 - 4,500 miles [Re: dgunay]
SatinSilver Offline


Registered: 01/24/08
Posts: 10178
Loc: OH
Originally Posted By: dgunay
I had a chance to test drive the RS for a week, it's really fun except the seats, they are a little bit narrow for my butt (6'1" 230 lbs).


Most people in the Toronto, Niagara area are pretty fit. Time to eat better, exercise and lose some weight.

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#4460088 - 07/15/17 11:58 AM Re: 2017 Focus RS - Castrol 0W40 - 4,500 miles [Re: wi11iam]
oil_film_movies Offline


Registered: 06/13/16
Posts: 2569
Loc: MN
People have been noticing a lot of VII shear in Motorcraft 5w50 oil over the years.
Seems the Castrol Edge 0w40 is a good choice in the RS.
Originally Posted By: hatt
Originally Posted By: Quattro Pete
Originally Posted By: hatt
Quote:
and which one maintained viscosity better
Viscosity retention may not be a plus in Ford applications. Looks like Ford wants the oil to quickly shear.
Ford should have recommended an Xw-40 oil then. smile
They did. MC 5w-50. It appears to only be a 50 from the bottle to the oil fill.grin

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