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Castrol GTX 20w50 High Mileage Semi-Synthetic #4496502
08/23/17 08:33 PM
08/23/17 08:33 PM
Joined: Jun 2008
Posts: 894
Colorado
BigJohn Offline OP
BigJohn  Offline OP
Joined: Jun 2008
Posts: 894
Colorado
I am curious how this oil would do in air cooled bikes with some mileage on them?????

I should state....shared sump, which probably means a lot of quick shearing.

Castrol GTX 20w50 High Mileage Semi-Synthetic

Whats the general opinion of this oil??????


I am considering using this in my '04 BMW 1150 GS and in my wife's TTR230.

.......

Last edited by BigJohn; 08/23/17 08:34 PM.

'14 Ram 1500 EcoDiesel 4x4, Delo 5w40
'15 Mercedes ML250, PenEuro 5w30
'05 BMW R1200GS, M1 15w50
'02 Yamaha WR426, RT4 15w40
'05 KTM 950 ADV-S, RT4 15w40
Re: Castrol GTX 20w50 High Mileage Semi-Synthetic [Re: BigJohn] #4496570
08/23/17 11:11 PM
08/23/17 11:11 PM
Joined: Jan 2006
Posts: 1,060
Ruidoso, NM USA
ammolab Offline
ammolab  Offline
Joined: Jan 2006
Posts: 1,060
Ruidoso, NM USA
Would do good in the BMW, but no gears in that sump.


2009 Honda CR-V
2011 BMW R1200R
2005 Kaw Ninja 250
1994 Jeep Wrangler 2.5L
2016 Chevy SS Sport Sedan
Re: Castrol GTX 20w50 High Mileage Semi-Synthetic [Re: BigJohn] #4496601
08/24/17 02:22 AM
08/24/17 02:22 AM
Joined: Feb 2015
Posts: 2,357
Slovenia EU
Kamele0N Offline
Kamele0N  Offline
Joined: Feb 2015
Posts: 2,357
Slovenia EU
When I looked in VOA subforum....I was surprised how low on ZDDP are modern 20w50 oils....

I would expect that as sae50 they had ton of it...but they all had around 700-800 ppm...even Harley Davidson brand


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: Castrol GTX 20w50 High Mileage Semi-Synthetic [Re: BigJohn] #4496662
08/24/17 05:38 AM
08/24/17 05:38 AM
Joined: Jul 2012
Posts: 2,559
South Carolina
alarmguy Offline
alarmguy  Offline
Joined: Jul 2012
Posts: 2,559
South Carolina
I think you would be fine, dont worry about shearing, they all do in shared sumps and taken into account.

Im experimenting right now with Valvoline MAXLIFE 20w50 semi. I think Castrol is a good runner up.
Curious to see how it matches up with my go to favorite - Mystik 15w50 that I have been using the last 2 years in my non shared sump Road King..

Last edited by alarmguy; 08/24/17 05:39 AM.

14 Road King (current)
08 VStar 1300 Tourer
07 Suzuki C50
Re: Castrol GTX 20w50 High Mileage Semi-Synthetic [Re: Kamele0N] #4496857
08/24/17 09:24 AM
08/24/17 09:24 AM
Joined: Feb 2016
Posts: 686
NJ, USA
MotoTribologist Offline
MotoTribologist  Offline
Joined: Feb 2016
Posts: 686
NJ, USA
Originally Posted By: Kamele0N
When I looked in VOA subforum....I was surprised how low on ZDDP are modern 20w50 oils....

I would expect that as sae50 they had ton of it...but they all had around 700-800 ppm...even Harley Davidson brand

More than likely, the blender will use a package of additives that will meet the specifications for all viscosity grades. So it'll meet the restrictions on the lower viscosity grades and they don't spend the money to top treat the higher grades with extra additives even though they are allowed to. It is all economics at that point and making as much/as cheap/as fast as possible.

Re: Castrol GTX 20w50 High Mileage Semi-Synthetic [Re: Kamele0N] #4496863
08/24/17 09:32 AM
08/24/17 09:32 AM
Joined: Jun 2017
Posts: 172
New York
jeff78 Offline
jeff78  Offline
Joined: Jun 2017
Posts: 172
New York
Originally Posted By: Kamele0N
When I looked in VOA subforum....I was surprised how low on ZDDP are modern 20w50 oils....

I would expect that as sae50 they had ton of it...but they all had around 700-800 ppm...even Harley Davidson brand


If you want high ZDDP in a 50 grade, try Valvoline VR1, Valvoline motorcycle oil, or Mobil 1 15W-50, they've all got over 1000ppm. For overkill, there's always Red Line with over 2000ppm.

I'm sure there are others as well, just a matter of finding them.

Re: Castrol GTX 20w50 High Mileage Semi-Synthetic [Re: BigJohn] #4496877
08/24/17 09:54 AM
08/24/17 09:54 AM
Joined: Jul 2015
Posts: 106
WI
Bzab32 Offline
Bzab32  Offline
Joined: Jul 2015
Posts: 106
WI
I use Castrol 20-50 in my air cooled triumph works great.


2015 Ford Edge 3.5L AWD
2009 F-350 6.4L PSD 6-spd manual
1999 Ducati 996
1970 Triumph T120R

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