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Synthetic 10W40 vs Mineral 15W40 (Both HDEO) #4462411
07/17/17 11:41 PM
07/17/17 11:41 PM
Joined: Nov 2016
Posts: 10
Singapore
Brandonysz Offline OP
Brandonysz  Offline OP
Joined: Nov 2016
Posts: 10
Singapore
Hi guys! Will a synthetic 10W40 HDEO (Shell Rimula R6M/R6LM) with a viscosity index of 153 be more shear stable than the mineral 15w40 counterpart (Shell Rimula R4X) with a viscosity index of 139?

Are there any other benefits of running the synthetic version other than cold start, resistance to thinning at higher temps, and longer drain intervals? (Ambient temps ranges from 26-33 celcius/80-95 fahrenheit, summer all the time)

Lastly, which one of the oils do you think is better for lots of stop/go riding? There are lots of traffic lights (80-90% City), will synthetics last longer/protect better than minerals for these conditions? Or will it be better to use mineral and change it more frequently?

Re: Synthetic 10W40 vs Mineral 15W40 (Both HDEO) [Re: Brandonysz] #4462413
07/17/17 11:50 PM
07/17/17 11:50 PM
Joined: Feb 2015
Posts: 2,361
Slovenia EU
Kamele0N Offline
Kamele0N  Offline
Joined: Feb 2015
Posts: 2,361
Slovenia EU
For stop&go definitely synthetic... Especially if you have turbo!


2008 Toyota Yaris 1ND-TV 1.4 D4-D Elf FullTech FE 5w30
1997 Toyota Landcruiser KZJ95 3.0 TD Shell Rimula R6M 10w40
Re: Synthetic 10W40 vs Mineral 15W40 (Both HDEO) [Re: Brandonysz] #4462414
07/17/17 11:51 PM
07/17/17 11:51 PM
Joined: Sep 2010
Posts: 7,508
Texas & Global
4WD Offline
4WD  Offline
Joined: Sep 2010
Posts: 7,508
Texas & Global
What is engine?


2018 Chevy 1500 Z71 4WD
2017 Chevy Tahoe LT 4WD
2014 Fusion Hybrid Titanium
2013 Cruze LTZ - RS Turbo
Re: Synthetic 10W40 vs Mineral 15W40 (Both HDEO) [Re: Brandonysz] #4462493
07/18/17 05:33 AM
07/18/17 05:33 AM
Joined: Oct 2015
Posts: 2,809
Balearic Islands , Spain
FordCapriDriver Offline
FordCapriDriver  Offline
Joined: Oct 2015
Posts: 2,809
Balearic Islands , Spain
Is this a motorcycle?


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.

Finnish expat in Spain.
Re: Synthetic 10W40 vs Mineral 15W40 (Both HDEO) [Re: Brandonysz] #4462567
07/18/17 07:09 AM
07/18/17 07:09 AM
Joined: Jul 2012
Posts: 2,568
South Carolina
alarmguy Offline
alarmguy  Offline
Joined: Jul 2012
Posts: 2,568
South Carolina
I would use 15/40 if your concerned about shearing and simply change at the recommended intervals.

You dont have cold weather in Singapore but if you did ride in 40 F degree weather then maybe I would choose a 10/40 for that time of year only.


14 Road King (current)
08 VStar 1300 Tourer
07 Suzuki C50
Re: Synthetic 10W40 vs Mineral 15W40 (Both HDEO) [Re: Brandonysz] #4462581
07/18/17 07:25 AM
07/18/17 07:25 AM
Joined: Nov 2016
Posts: 10
Singapore
Brandonysz Offline OP
Brandonysz  Offline OP
Joined: Nov 2016
Posts: 10
Singapore
My bad forgot to mention that it is a motorcycle. Is the mineral version good enough to protect during harsh usage and high heat? The people I know that use HDEO generally use their bikes strictly as commuters, dont know firsthand anybody yet that rides hard using HDEO.

By the way, is it accurate to use shift feel to estimate the viscosity of the oil? I heard that if the shifting becomes hard or difficult to find neutral, the oil is broken down or something

Last edited by Brandonysz; 07/18/17 07:34 AM.
Re: Synthetic 10W40 vs Mineral 15W40 (Both HDEO) [Re: Brandonysz] #4462595
07/18/17 07:39 AM
07/18/17 07:39 AM
Joined: May 2009
Posts: 12,283
N.H, U.S.A.
ARCOgraphite Offline
ARCOgraphite  Offline
Joined: May 2009
Posts: 12,283
N.H, U.S.A.
Marine 25w40.


2014 Nissan Rogue S CVT, OC#10 47272mi-QSUD10W30+5w20 Toughguard Filter; '17 Subaru Crosstrek CVT OC#2 ?? mi-SOA/Idemitsu 0w20 + SOA Filter
Re: Synthetic 10W40 vs Mineral 15W40 (Both HDEO) [Re: ARCOgraphite] #4464573
07/20/17 05:10 AM
07/20/17 05:10 AM
Joined: May 2016
Posts: 121
Vienna, Austria
alex_at Offline
alex_at  Offline
Joined: May 2016
Posts: 121
Vienna, Austria
Originally Posted By: ARCOgraphite
Marine 25w40.


Never heard that recommendation before, which Marine 25W40?

Re: Synthetic 10W40 vs Mineral 15W40 (Both HDEO) [Re: alex_at] #4464817
07/20/17 10:41 AM
07/20/17 10:41 AM
Joined: Jul 2007
Posts: 972
SACRAMENTO, CA
rrounds Offline
rrounds  Offline
Joined: Jul 2007
Posts: 972
SACRAMENTO, CA
Originally Posted By: alex_at
Originally Posted By: ARCOgraphite
Marine 25w40.


Never heard that recommendation before, which Marine 25W40?

Here is some to choose from
25/40 oil

Rod


'06 S2000
'00 SSEi sold at 252k miles
'08 Ford F53 V10
'13 Jeep Sahara 2 door
Re: Synthetic 10W40 vs Mineral 15W40 (Both HDEO) [Re: Brandonysz] #4465673
07/20/17 11:32 PM
07/20/17 11:32 PM
Joined: Nov 2016
Posts: 10
Singapore
Brandonysz Offline OP
Brandonysz  Offline OP
Joined: Nov 2016
Posts: 10
Singapore
Thanks for the input guys! Much appreciated! laugh

Re: Synthetic 10W40 vs Mineral 15W40 (Both HDEO) [Re: Brandonysz] #4465917
07/21/17 08:12 AM
07/21/17 08:12 AM
Joined: Mar 2008
Posts: 5,969
South Florida
bubbatime Offline
bubbatime  Offline
Joined: Mar 2008
Posts: 5,969
South Florida
Originally Posted By: Brandonysz
Hi guys! Will a synthetic 10W40 HDEO (Shell Rimula R6M/R6LM) with a viscosity index of 153 be more shear stable than the mineral 15w40 counterpart (Shell Rimula R4X) with a viscosity index of 139?


Shell Rimula R6M and Rimula R4X both carry the JASO rating for wet clutch motorcycles. Both are fine. I wouldn't worry about finding a thicker 20W40 or 25W40 marine oil, especially considering a marine oil is probably loaded with MOLY which is not good for a motorcycle clutch. I'd use the Rimula R4x myself and just change the oil every 2k to 3K miles or earlier if the shifting starts deteriorating.


17 Chrysler Pacifica Mobil 1 5W30
13 Yamaha XT250 Valv MC 10W40
10 Acura TSX 2.4 Maxlife Syn 5W30
06 GMC Sierra Nextgen 10W30


Re: Synthetic 10W40 vs Mineral 15W40 (Both HDEO) [Re: bubbatime] #4491390
08/17/17 06:53 PM
08/17/17 06:53 PM
Joined: Aug 2017
Posts: 49
South Oz, Australia
ozdrrider Offline
ozdrrider  Offline
Joined: Aug 2017
Posts: 49
South Oz, Australia
Originally Posted By: bubbatime
Originally Posted By: Brandonysz
Hi guys! Will a synthetic 10W40 HDEO (Shell Rimula R6M/R6LM) with a viscosity index of 153 be more shear stable than the mineral 15w40 counterpart (Shell Rimula R4X) with a viscosity index of 139?


Shell Rimula R6M and Rimula R4X both carry the JASO rating for wet clutch motorcycles. Both are fine. I wouldn't worry about finding a thicker 20W40 or 25W40 marine oil, especially considering a marine oil is probably loaded with MOLY which is not good for a motorcycle clutch. I'd use the Rimula R4x myself and just change the oil every 2k to 3K miles or earlier if the shifting starts deteriorating.


G'day bubbatime. I have been reading on here for quite a while looking for a direct comparison of Rimula R4X to the the Rotella T4. I have assumed (which is always dangerous) that they are the same. Has anyone lab tested the R4X to show it's the same oil package as the T4? I am dropping off some oil samples to a Caterpillar service centre here in Oz and was going to get a VOA done....... but if I can save $40......
FYI The R4X will be going in the DR650.... picked up a heap @ <$5 a litre; will change often in the bike, as I tend to do... grin


15 Pajero 3.2 Penrite 10w40 full syn 50K km
06 Suzuki Swift Sport 1.6L 5w30 Nulon full syn
17 Suzuki DR650: Trialing LUBEALLOY LA 35 ES
83 350 Chev powered Ski Boat: Nulon 15w40
Re: Synthetic 10W40 vs Mineral 15W40 (Both HDEO) [Re: Brandonysz] #4497065
08/24/17 01:47 PM
08/24/17 01:47 PM
Joined: May 2016
Posts: 121
Vienna, Austria
alex_at Offline
alex_at  Offline
Joined: May 2016
Posts: 121
Vienna, Austria
Shell Rimula R4X does carry a Jaso approval, but not Jaso MA as we motorcyclists need, it has JASO-DH1, which is a new Diesel engine standard!

Neither is it Allison approved ....

Re: Synthetic 10W40 vs Mineral 15W40 (Both HDEO) [Re: Brandonysz] #4503242
08/31/17 10:20 AM
08/31/17 10:20 AM
Joined: Nov 2016
Posts: 10
Singapore
Brandonysz Offline OP
Brandonysz  Offline OP
Joined: Nov 2016
Posts: 10
Singapore
The R4X has been tested on my aircooled 200cc bike, no problems with the clutch. Im curious whether the synthetic R6 provides better protection than the R4X.


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