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Rotella T6 + T4 #4713235
04/01/18 12:27 PM
04/01/18 12:27 PM
Joined: May 2004
Posts: 4
Central Minnesota
garyw Offline OP
garyw  Offline OP
Joined: May 2004
Posts: 4
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.

Re: Rotella T6 + T4 [Re: garyw] #4713237
04/01/18 12:30 PM
04/01/18 12:30 PM
Joined: Oct 2015
Posts: 2,648
Balearic Islands , Spain
FordCapriDriver Offline
FordCapriDriver  Offline
Joined: Oct 2015
Posts: 2,648
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, - Shell Helix HX3 20W-50 w/ 20% Rimula R4X 15W-40 HDEO.

1988 Ford Escort Mk4 Xr3i Cabrio, - Shell Rimula R4X 15W-40, w/ 30% Helix 3 20W-50.
Re: Rotella T6 + T4 [Re: garyw] #4713248
04/01/18 12:50 PM
04/01/18 12:50 PM
Joined: Jul 2004
Posts: 12,024
Middlesex County CT
simple_gifts Offline
simple_gifts  Offline
Joined: Jul 2004
Posts: 12,024
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.


2004 Prius; 97K ML Syn 5W-30
2007 Yaris 71K 0w-40 Castrol
2006 B2300;130K;ALM


Was driving an ox cart; Now on the USS Enterprise
Re: Rotella T6 + T4 [Re: garyw] #4713265
04/01/18 01:21 PM
04/01/18 01:21 PM
Joined: Dec 2017
Posts: 2,301
SE British Columbia, Canada
Snagglefoot Offline
Snagglefoot  Offline
Joined: Dec 2017
Posts: 2,301
SE British Columbia, Canada
It will be fine.


If you want the job done right......do it yourself.
Re: Rotella T6 + T4 [Re: garyw] #4713267
04/01/18 01:22 PM
04/01/18 01:22 PM
Joined: Oct 2009
Posts: 3,205
Wet side WA
JohnnyJohnson Offline
JohnnyJohnson  Offline
Joined: Oct 2009
Posts: 3,205
Wet side WA
Just watch the oil monitor.


2004 Corolla 124642
Out: VML 5w-30 TG4967 OCI 5007 Miles
In: EDGE EP 5W-30 Bosch 3311 122537 7-18-18
2006 Duramax 74277
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 74705 4-22-18
Re: Rotella T6 + T4 [Re: garyw] #4713339
04/01/18 03:30 PM
04/01/18 03:30 PM
Joined: Dec 2016
Posts: 6,226
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 6,226
Waco, TX
If the 6.0 is "bulletproofed & deleted", 5,000 in not a problem at all.

The oil is fine.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Rotella T6 + T4 [Re: garyw] #4713345
04/01/18 03:33 PM
04/01/18 03:33 PM
Joined: Oct 2014
Posts: 11,816
Idaho
CT8 Offline
CT8  Offline
Joined: Oct 2014
Posts: 11,816
Idaho
Leave it 15W-40 is a better oil.


"Don't let your preconceived notions get in the way of facts."
Geoff Metcalf
Re: Rotella T6 + T4 [Re: garyw] #4713368
04/01/18 03:51 PM
04/01/18 03:51 PM
Joined: Jan 2009
Posts: 824
PA
ridgerunner Offline
ridgerunner  Offline
Joined: Jan 2009
Posts: 824
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.

Re: Rotella T6 + T4 [Re: garyw] #4713383
04/01/18 04:11 PM
04/01/18 04:11 PM
Joined: Apr 2016
Posts: 1,185
Campbellsville, KY
Alex_V Offline
Alex_V  Offline
Joined: Apr 2016
Posts: 1,185
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.

Last edited by Alex_V; 04/01/18 04:13 PM.

I like Chevy and Valvoline.

'13 Cruze, 1.4T, 113K
'85 GMC C3500, 454, 130K
'82 Mercedes 300CD, OM617 turbo, 169K
'67 Suburban, 350, 331K
Re: Rotella T6 + T4 [Re: garyw] #4713418
04/01/18 04:57 PM
04/01/18 04:57 PM
Joined: Oct 2004
Posts: 7,955
Cincinnati, OH, USA
bullwinkle Offline
bullwinkle  Offline
Joined: Oct 2004
Posts: 7,955
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.


06 Ram 3500 CTD 4X4(FG Venturi), 93 GMC C3500 6.2, 89 F-450 7.3, 98 XJ 4.0(XG8A), 05 xB(XG3600), 18 Transit 3.7, 03 Merc Grand Marquis 4.6 2V(XG2)
Re: Rotella T6 + T4 [Re: bullwinkle] #4714441
04/02/18 07:13 PM
04/02/18 07:13 PM
Joined: May 2004
Posts: 4
Central Minnesota
garyw Offline OP
garyw  Offline OP
Joined: May 2004
Posts: 4
Central Minnesota
Yes, the 6.0 has been bulletproofed and deleted. I think the oil also drives the injectors.

Re: Rotella T6 + T4 [Re: garyw] #4714624
04/02/18 10:19 PM
04/02/18 10:19 PM
Joined: Nov 2017
Posts: 286
North of you Idaho
KneeGrinder Offline
KneeGrinder  Offline
Joined: Nov 2017
Posts: 286
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
Re: Rotella T6 + T4 [Re: garyw] #4714876
04/03/18 08:16 AM
04/03/18 08:16 AM
Joined: Oct 2010
Posts: 7,002
Michigan
A_Harman Offline
A_Harman  Offline
Joined: Oct 2010
Posts: 7,002
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
Re: Rotella T6 + T4 [Re: A_Harman] #4719763
04/07/18 05:49 PM
04/07/18 05:49 PM
Joined: May 2004
Posts: 4
Central Minnesota
garyw Offline OP
garyw  Offline OP
Joined: May 2004
Posts: 4
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?

Re: Rotella T6 + T4 [Re: garyw] #4719904
04/07/18 08:05 PM
04/07/18 08:05 PM
Joined: Nov 2017
Posts: 286
North of you Idaho
KneeGrinder Offline
KneeGrinder  Offline
Joined: Nov 2017
Posts: 286
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.

Last 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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