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#4713235 - 04/01/18 12:27 PM Rotella T6 + T4
garyw Offline


Registered: 05/25/04
Posts: 4
Loc: Central Minnesota
I run Rotella T6 Full Synthetic 5/40 in my 2006 Ford F-350 6.0 Diesel. I had some engine work done and the shop added 2 quarts of Rotella T4 Conventional 15/40 because some oil was lost. I only had about 50 miles on the T6. Should I change it or leave it go until my usual oil change of 3000 miles.

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#4713237 - 04/01/18 12:30 PM Re: Rotella T6 + T4 [Re: garyw]
FordCapriDriver Offline


Registered: 10/22/15
Posts: 2324
Loc: Balearic Islands , Spain
No worries, and if i were you i would change the oil every 5-6k miles not 3k.
_________________________
1975 Ford Capri II Ghia 3000 V6
1988 Ford Escort 1.6 Xr3i Convertible
Finnish expat living in Spain
My clothes smell like 15W-40 HDEO and 20W-50.

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#4713248 - 04/01/18 12:50 PM Re: Rotella T6 + T4 [Re: garyw]
simple_gifts Offline


Registered: 07/26/04
Posts: 11869
Loc: Middlesex County CT
Ford 6.0 might be a 'special ford design' that warrants low OCI.

Other, more knowledgeable BITOG'rs, feel free to chime in.
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2004 Prius; 92K ASL
2007 Yaris 68K 0w-40 Castrol
2006 B2300;130K;ALM


Was driving an ox cart; Now on the USS Enterprise

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#4713265 - 04/01/18 01:21 PM Re: Rotella T6 + T4 [Re: garyw]
Snagglefoot Offline


Registered: 12/31/17
Posts: 1305
Loc: Alberta
It will be fine.

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#4713267 - 04/01/18 01:22 PM Re: Rotella T6 + T4 [Re: garyw]
JohnnyJohnson Online   content


Registered: 10/22/09
Posts: 2394
Loc: Wet side WA
Just watch the oil monitor.
_________________________
2004 Toyota Corolla 119727
Out: QSUD 5W-30 Purolator One 5030
In: Valvoline ML 5w-30 TG4967 117530 2-8-18
2006 Duramax 73752
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 73752 4-22-18

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#4713339 - 04/01/18 03:30 PM Re: Rotella T6 + T4 [Re: garyw]
Linctex Offline


Registered: 12/31/16
Posts: 5718
Loc: Waco, TX
If the 6.0 is "bulletproofed & deleted", 5,000 in not a problem at all.

The oil is fine.
_________________________
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#4713345 - 04/01/18 03:33 PM Re: Rotella T6 + T4 [Re: garyw]
CT8 Offline


Registered: 10/09/14
Posts: 10555
Loc: Idaho
Leave it 15W-40 is a better oil.
_________________________
Artificial intelligence is no match for natural stupidity, we shall prevail

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#4713368 - 04/01/18 03:51 PM Re: Rotella T6 + T4 [Re: garyw]
ridgerunner Offline


Registered: 01/14/09
Posts: 715
Loc: PA
Doesnt the 6.0 diesel use the engine oil for something other than a lube in its engine? thinking I read something like 3,000 PSI and high heat running a pump or something? Super rough on the oil, especially conventional oil.

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#4713383 - 04/01/18 04:11 PM Re: Rotella T6 + T4 [Re: garyw]
Alex_V Offline


Registered: 04/10/16
Posts: 1117
Loc: Campbellsville, KY
I wouldn't waste the rest of the new 5w40. That 2 qts. is a pretty small percentage considering it mixed in with 3 more gallons of the T6, and though I wouldn't, I know several guys that run 15w40 in their 6.0's. And bulletproofed or not, 3K sounds like a real waste especially on T6.


Edited by Alex_V (04/01/18 04:13 PM)
_________________________
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#4713418 - 04/01/18 04:57 PM Re: Rotella T6 + T4 [Re: garyw]
bullwinkle Offline


Registered: 10/09/04
Posts: 7480
Loc: Cincinnati, OH, USA
I ran 5K OCIs on the '03 6.0 PSD I had, the later 6.0s seem a little better than the earlier ones were. I would run it the full 5K and put in T4 10W30-it's just as good cold as the T6 and costs roughly half as much.
_________________________
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#4714441 - 04/02/18 07:13 PM Re: Rotella T6 + T4 [Re: bullwinkle]
garyw Offline


Registered: 05/25/04
Posts: 4
Loc: Central Minnesota
Yes, the 6.0 has been bulletproofed and deleted. I think the oil also drives the injectors.

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#4714624 - 04/02/18 10:19 PM Re: Rotella T6 + T4 [Re: garyw]
KneeGrinder Offline


Registered: 11/28/17
Posts: 215
Loc: North of you Idaho
Originally Posted By: garyw
Yes, the 6.0 has been bulletproofed and deleted. I think the oil also drives the injectors.


Yes, your engine oil drives your injectors. Your motor has a high pressure oil pump "HPOP" mounted on the top front block next to your fuel bowl that pressurizes the injectors. That's why your motor takes so much oil. It is referred to as a HEUI injector, Hydraulically actuated Electronically controlled Unit Injectors.

P.S. even 5k oil change is overkill unless it takes you a year to accumulate 5k.
_________________________
08 Tribeca 82k PUP 5w30 wix
06 Accord Hybrid 131k PUP 5w20 wix
02 Chevy k3500 97k Delvac 1 esp 5w40 wix
00 F350 133k Delvac 1300 15w40 wix

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#4714876 - 04/03/18 08:16 AM Re: Rotella T6 + T4 [Re: garyw]
A_Harman Offline


Registered: 10/01/10
Posts: 6831
Loc: Michigan
The HEUI Fords are famous for shearing 5w40, so the oil probably ends up a 5w30. 15w40 and 10w30 stay in grade better in those engines. A couple of quarts of T4 15w40 isn't going to hurt anything.
_________________________
1985 Z51 Corvette track car
2002 Camaro Z28 LS1/6-speed
2001 Dodge Ram 2500 diesel
1972 GMC 1500 shortbed project truck

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#4719763 - 04/07/18 05:49 PM Re: Rotella T6 + T4 [Re: A_Harman]
garyw Offline


Registered: 05/25/04
Posts: 4
Loc: Central Minnesota
I only put on 5000 miles or less in a year. I will just change it once a year. If I switch to T4 15-40, won't it be pretty thick on a -20 degree morning and take a while to get up in the engine?

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#4719904 - 04/07/18 08:05 PM Re: Rotella T6 + T4 [Re: garyw]
KneeGrinder Offline


Registered: 11/28/17
Posts: 215
Loc: North of you Idaho
Originally Posted By: garyw
I only put on 5000 miles or less in a year. I will just change it once a year. If I switch to T4 15-40, won't it be pretty thick on a -20 degree morning and take a while to get up in the engine?



Yes! 15w40 will give you a harder time starting at -20F. Stick with the synthetic for your application then, didn't notice your from MN, gets really cold there! I change oil in all my vehicles once a year also, I don't even accumulate 5k per year, per vehicle.


Edited by KneeGrinder (04/07/18 08:06 PM)
_________________________
08 Tribeca 82k PUP 5w30 wix
06 Accord Hybrid 131k PUP 5w20 wix
02 Chevy k3500 97k Delvac 1 esp 5w40 wix
00 F350 133k Delvac 1300 15w40 wix

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