Forums Migration

Please read this thread

Recent Topics
Silver Windshield Sun Shades
by rrretiree7 - 07/08/20 02:04 AM
Castrol Edge PIck-Up
by Gene K - 07/08/20 01:51 AM
Safety kleen seals.
by Chris142 - 07/07/20 10:58 PM
I do a full detail everything 2 or 3 years.
by SLO_Town - 07/07/20 09:59 PM
Oil Recommendation 2020 GR Supra
by afree - 07/07/20 09:51 PM
I need to drive it more...
by SLO_Town - 07/07/20 09:43 PM
Pennzoil
by BlueOvalFitter - 07/07/20 09:07 PM
100k 06 Fusion 2.3
by Aichiguy - 07/07/20 08:13 PM
CHINA
by buster - 07/07/20 07:52 PM
Darker varnish spot on rocker arm
by Spetz - 07/07/20 07:29 PM
AC Delco Dexron VI $18.76 a Gallon Amazon
by Matt1980 - 07/07/20 07:17 PM
ALS labs change in fuel dilution test
by LotI - 07/07/20 06:50 PM
Archery high tech
by CourierDriver - 07/07/20 06:42 PM
Odd filter issue
by fatrap314 - 07/07/20 06:33 PM
Lexus IS 350 AWD 2016 0W-20
by hotp4nts182 - 07/07/20 06:14 PM
Duh-- Didn't know there was a SIM card.
by csandste - 07/07/20 03:54 PM
Running 40 PSI vs 35
by Mr_Luke - 07/07/20 03:05 PM
Kidney Filtration-Secondary Effects???
by TravlinTech - 07/07/20 02:41 PM
Newest Members
fatrap314, hotp4nts182, LeslieX, Mayuraj, thexeve
71876 Registered Users
Who's Online Now
21 registered members (Drosselmier, ChristianBerg, DaHen, Ctopher, 4 invisible), 774 guests, and 23 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums67
Topics307,583
Posts5,313,562
Members71,876
Most Online4,538
Jan 20th, 2020
Donate to BITOG
Print Thread
Hop To
Page 1 of 2 1 2
Mixing Rotella T4 and T6 #5466316 06/30/20 12:21 PM
Joined: Jan 2011
Posts: 1,120
D
DGXR Offline OP
OP Offline
D
Joined: Jan 2011
Posts: 1,120
T4 is 15w40 "conventional" and T6 is 5w40 synthetic. I've been using T4 for a while without any problems except hard starting at lower ambient temps. I've used T6 before and the starts are good but shifts are quite notchy. My idea is to blend T4 and T6 50/50 to get a 10w40 that is really stout and really affordable... looking for a middle ground I guess. Your thoughts?


1995 Corvette coupe LT1 6-speed
2006 Tacoma 2.7 Base SR5 AC
2003 Honda XR400R
1999 Yamaha YZ400FL
Re: Mixing Rotella T4 and T6 [Re: DGXR] #5466351 06/30/20 01:06 PM
Joined: Dec 2005
Posts: 4,902
0
02SE Offline
Offline
0
Joined: Dec 2005
Posts: 4,902
I've used both. They are certainly cheap.

I don't care for either, as shift quality quickly degrades compared to other, better performing oils.

Last edited by 02SE; 06/30/20 01:07 PM.
Re: Mixing Rotella T4 and T6 [Re: DGXR] #5466387 06/30/20 01:39 PM
Joined: Oct 2014
Posts: 15,547
C
CT8 Offline
Offline
C
Joined: Oct 2014
Posts: 15,547
T4 plus T6 equals 10 divided by 2 equals T5.


2015 F150 2.7
2018 F350 6.2
Re: Mixing Rotella T4 and T6 [Re: CT8] #5466420 06/30/20 02:38 PM
Joined: Feb 2014
Posts: 3,942
L
Lolvoguy Online Shocked
Online Shocked
L
Joined: Feb 2014
Posts: 3,942
Originally Posted by CT8
T4 plus T6 equals 10 divided by 2 equals T5.

thumbsup


06 Lexus IS350- Wife
88 BMW 325is- Mistress
Say "no" to Turbo!
Re: Mixing Rotella T4 and T6 [Re: DGXR] #5466437 06/30/20 03:00 PM
Joined: Mar 2020
Posts: 92
N
Normac Offline
Offline
N
Joined: Mar 2020
Posts: 92
Best answer is to try it for an OCI and see how it holds up and how the shifting feels. Can’t see how it could possibly hurt.


True victory does not come from defeating an enemy, true victory comes from giving love and changing an enemies heart.
Re: Mixing Rotella T4 and T6 [Re: DGXR] #5466517 06/30/20 04:56 PM
Joined: Feb 2009
Posts: 2,507
K
krismoriah72 Offline
Offline
K
Joined: Feb 2009
Posts: 2,507
Originally Posted by DGXR
T4 is 15w40 "conventional" and T6 is 5w40 synthetic. I've been using T4 for a while without any problems except hard starting at lower ambient temps. I've used T6 before and the starts are good but shifts are quite notchy. My idea is to blend T4 and T6 50/50 to get a 10w40 that is really stout and really affordable... looking for a middle ground I guess. Your thoughts?



Thats an OK plan but..

Mobil 1 15w50 is $23/5qts. $4.60/qt

T6 5w40- is $21/4qts
T4 15w40 is $14/4qts

Blend them and you come up to $4.40/qt


You said you wanted really stout and really affordable... i think the Mobil1 is the middle ground fair deal?

Re: Mixing Rotella T4 and T6 [Re: DGXR] #5466529 06/30/20 05:19 PM
Joined: Jun 2013
Posts: 615
B
Bonz Offline
Offline
B
Joined: Jun 2013
Posts: 615
A few questions here in the middle of the summer...

What bike are you riding? Air-cooled, liquid-cooled, V-Twin, four-cylinder, etc

What ambient temperature are you starting the motorcycle at that 15w40 is causing hard starting? Looks like you are in California. As in the bike won't start and experiences difficulty to get going at all?

With that said T5 is still a 15w40, despite the creative math. smile





Re: Mixing Rotella T4 and T6 [Re: DGXR] #5466548 06/30/20 05:46 PM
Joined: Jun 2003
Posts: 232
S
samven Offline
Offline
S
Joined: Jun 2003
Posts: 232
I mix the same 2 oils for my Yamaha Roadliner. Air cooled 1800cc. Same reasons you gave, I started using the 5w40 and noticed the shift issues at about 2000 miles, went to the Mobil 15w50 and come Oct the morning starts would be slow so I started blending the T4 and T6 and its been fine for the last 15000 miles. I dont know what it will be like when my stash of the old Rotella is gone and I have to buy the new stuff.

Re: Mixing Rotella T4 and T6 [Re: DGXR] #5466567 06/30/20 06:21 PM
Joined: Dec 2011
Posts: 1,282
BusyLittleShop Offline
Offline
Joined: Dec 2011
Posts: 1,282
Mixing synthetic uniform molecules with conventional random size molecule just makes less desirable synthetic... but it does improve the conventional...


[Linked Image]

[Linked Image]


Larry L
Have a Wheelie NICE day
94 RC45 #2 58,000 on 30 Grade, Currently Mobil 1 5W30 SN
2002 Camaro Mobil 1 5W30
1952 De Havilland Chipmunk



Re: Mixing Rotella T4 and T6 [Re: DGXR] #5466664 06/30/20 08:47 PM
Joined: Aug 2008
Posts: 4,222
R
Reddy45 Offline
Offline
R
Joined: Aug 2008
Posts: 4,222
I have done exactly this and someone here wagged their finger in my face and was like "nooooooooo it doesn't work like that".

It works fine.

Re: Mixing Rotella T4 and T6 [Re: Reddy45] #5466727 06/30/20 10:45 PM
Joined: Jun 2013
Posts: 615
B
Bonz Offline
Offline
B
Joined: Jun 2013
Posts: 615
It'll work fine, agreed. I judge shift quality falling off as the determinant for oil changes, if I haven't reached the 5,000 mile mark.

Haven't had a problem with shift quality falling off before 5,000 miles in the past 3 years now that I've been using either of the Mobil 1 motorcycle specific oils. That stuff is just plain good in 10w40 4T or 20w50 V-Twin flavor in the shared sump of the Kawasaki ZRX 1200.

I get it guys want to save a few bucks, then they change oil at half the recommended interval of most manufacturers or even more frequently than that. Running 3.3 quarts of either oil mentioned above for 5,000 miles with a filter is the best deal going when you consider the cost of the partial quart and not having to recycle double the amount of motor oil if changing it at 2,000 or 2,500 miles.

Re: Mixing Rotella T4 and T6 [Re: Lolvoguy] #5467228 07/01/20 03:51 PM
Joined: Apr 2016
Posts: 853
1
1978elcamino Offline
Offline
1
Joined: Apr 2016
Posts: 853
Originally Posted by Lolvoguy
Originally Posted by CT8
T4 plus T6 equals 10 divided by 2 equals T5.

thumbsup


I also agree... = 5

Re: Mixing Rotella T4 and T6 [Re: BusyLittleShop] #5467277 07/01/20 04:55 PM
Joined: Oct 2014
Posts: 15,547
C
CT8 Offline
Offline
C
Joined: Oct 2014
Posts: 15,547
Originally Posted by BusyLittleShop
Mixing synthetic uniform molecules with conventional random size molecule just makes less desirable synthetic... but it does improve the conventional...


[Linked Image]

[Linked Image]




Hydroisomerized oils?


2015 F150 2.7
2018 F350 6.2
Re: Mixing Rotella T4 and T6 [Re: DGXR] #5467351 07/01/20 06:24 PM
Joined: Nov 2009
Posts: 717
M
Mr_Joe Offline
Offline
M
Joined: Nov 2009
Posts: 717
When it comes to mixing my thought is, are both suitable oils by themselves? If that is the case, no worries. Of course you need to be in the ballpark for the correct viscosity and all.

I mix, within reason.

Re: Mixing Rotella T4 and T6 [Re: DGXR] #5467378 07/01/20 07:06 PM
Joined: Apr 2019
Posts: 100
M
Merek Offline
Offline
M
Joined: Apr 2019
Posts: 100
There is also a T6 15w40 FS version that you could try without mixing. I've found that by switching over to a FS or even a blended oil that it makes a huge difference when the temps drop even using the same grade of oil. If it still ends up being too thick you can always mix in some 5w40.

At Walmart for motorcycle specific oil's in 10w40 & 20w50 there is Castrol Actevo that's available for $6.32 qt, Valvoline FS for $7.37 qt but then there's also Super Tech FS @ $8.68 qt which doesn't make sense as it's actually more expensive than the other options available.

Page 1 of 2 1 2
Previous Thread
Index
Next Thread

BOB IS THE OIL GUY® Powered by UBB.threads™