Castrol TWS Motorsport Vs Castrol RS Oil

0-60Motorsports · Sun, Oct-19-2008, 02:50:00 PM

Hey Guys

OK i know for a fact that only 10w 60 Castrol TWS Motorsport oil should be used in M3,M5, M5, Z4M etc, i.e all M cars. Now people and independent shop owners in Bahrain and Saudi (inc BMW in Saudi) keep insisting that CASTROL RS 10w60 is the same as TWS 10w 60. I went to Saudi yesterday to try and get some TWS M oil and they said they use the RS for all M cars for the last 3 years approx!!!!! I had a long argument with the guys there and in the end they admitted defeat and could not show me any documentation from BMW recommending RS oil for the M cars.

Im Glad that at least BMW BAHRAIN have the TWS Motorsport oil and are using that instead of the RS.

I have read people saying that the RS is the same as the TWS but different market name. Someone please clarify this issue for me and others here as well. I am really getting confused and angry cos now a lot of people i know are using CASTROL RS oil in their Ms and this is really worrying if the engine was designed for Castrol TWS. Any input would be very helpful guys! Thanks.

ltng · Sun, Oct-19-2008, 02:58:00 PM

send the two oils to a research place.

and what do you save? like $20...

0-60Motorsports · Sun, Oct-19-2008, 02:59:35 PM

Dude money is not the object here, i just want someone here who has any knowledge about this issue to chime in and tell us the facts. I wana be able to use the right oil for my car and + i dont want my engine blowing up on me. Cheers.

**swaybar** · Sun, Oct-19-2008, 04:50:25 PM

they are not the same oil
however, both are approved to be used in the m3
bmw recommends castrol tws, but rs (cheaper) can also be used
in fact it says somewhere on the air intake i believe that either tws or rs can be used.
in some countries tws is not available and the closest is the rs
typically they are made for different markets.
i know tws is for US and Europe, but i know for a fact that some countries only get the rs for the ///m vehicles
many people who used both reported oil operating temperature differences.
with tws most people reported a consistent oil temp of 100 degrees C whereas with the rs they reported lesser temps (roughly 90)
it's often debated what operating temp is best, but it's important to note that lower operating temp is not always better.

SoulBladeZA · Sun, Oct-19-2008, 04:57:18 PM

My temps are ~85 in winter, ~100 degrees centigrade in summer.

TWS.

0-60Motorsports · Sun, Oct-19-2008, 07:02:44 PM

Thank you for that! In Bahrain it gets pretty hot and like last friday at the F1 circuit track temps were up to 50c!!!! So if the RS is good enough for the heat i wouldnt mind using it! More inputs please from more of our members would be great

Thank you all so much.

0-60Motorsports · Sun, Oct-19-2008, 07:03:44 PM

Quote:

Originally Posted by SoulBladeZA

My temps are ~85 in winter, ~100 degrees centigrade in summer.

TWS.

Hey Bro mines also 85 in winter but just a nudge over 100c in summer so around 120c........

Makavelim3 · Sun, Oct-19-2008, 09:07:48 PM

Interesting Ejaz ...

0-60Motorsports · Sun, Oct-19-2008, 09:13:51 PM

I will call BMW Middle-East tomorrow and ask the technical section (if they have one) and then we will see what they have to say.

WillC310 · Sun, Oct-19-2008, 10:44:11 PM

Also remember that E46M3's originally ran 5w30 for the first year and a half or so. It wasn't until the rod bearing failures that BMW changed their stance and said we have to run 10w60.

Sun, Oct-19-2008, 02:50:00 PM	#1
0-60Motorsports Established 1998.... Join Date: Mar 2004 Posts: 10,006 In the garage: '08 LEXUS IS F '08 VOLKSWAGEN GOLF '04 BMW M3 Reputation: 0 Location: Al Manama, Bahrain	Castrol TWS Motorsport Vs Castrol RS Oil Hey Guys OK i know for a fact that only 10w 60 Castrol TWS Motorsport oil should be used in M3,M5, M5, Z4M etc, i.e all M cars. Now people and independent shop owners in Bahrain and Saudi (inc BMW in Saudi) keep insisting that CASTROL RS 10w60 is the same as TWS 10w 60. I went to Saudi yesterday to try and get some TWS M oil and they said they use the RS for all M cars for the last 3 years approx!!!!! I had a long argument with the guys there and in the end they admitted defeat and could not show me any documentation from BMW recommending RS oil for the M cars. Im Glad that at least BMW BAHRAIN have the TWS Motorsport oil and are using that instead of the RS. I have read people saying that the RS is the same as the TWS but different market name. Someone please clarify this issue for me and others here as well. I am really getting confused and angry cos now a lot of people i know are using CASTROL RS oil in their Ms and this is really worrying if the engine was designed for Castrol TWS. Any input would be very helpful guys! Thanks. __________________ EURO 04 M3 Current Mods: GC DA's, Eibach Sways, PF RTABs, RE RCAs, INTRAVEE II + Alpine KCA-420i, Black Roundels, ///MFEST Badges, Depo Corners, M5 SMG Knob, Screen protector for OEM 16:9 display, VCSL: Bumper + Race Lip, CF Trunk, CF Diffusor, DIETZ TV in Motion, AP Headers, RT Cats, SS Res X-pipe, SS Race, Z8 Starter Button, Lamin-X, GM SMG Paddles, OEM CSL Steering, OEM CSL interior, OEM CSL Intake, EVOLVE Alpha-N Tune, BBS CH's, FX-R Projectors + 3k D2S, ST40's, DINAN Rear Strut Brace, BW Oil Cooler, 3.91 gears Soon To come.....OEM CSL Roof, Inner Projectors ........

Sun, Oct-19-2008, 02:58:00 PM	#2
ltng i used to read word up magazines Join Date: Oct 2006 Posts: 360 Reputation: 0 Location: seattle	send the two oils to a research place. and what do you save? like $20... __________________ ///M

Sun, Oct-19-2008, 02:59:35 PM	#3
0-60Motorsports Established 1998.... Join Date: Mar 2004 Posts: 10,006 In the garage: '08 LEXUS IS F '08 VOLKSWAGEN GOLF '04 BMW M3 Reputation: 0 Location: Al Manama, Bahrain	Dude money is not the object here, i just want someone here who has any knowledge about this issue to chime in and tell us the facts. I wana be able to use the right oil for my car and + i dont want my engine blowing up on me. Cheers. __________________ EURO 04 M3 Current Mods: GC DA's, Eibach Sways, PF RTABs, RE RCAs, INTRAVEE II + Alpine KCA-420i, Black Roundels, ///MFEST Badges, Depo Corners, M5 SMG Knob, Screen protector for OEM 16:9 display, VCSL: Bumper + Race Lip, CF Trunk, CF Diffusor, DIETZ TV in Motion, AP Headers, RT Cats, SS Res X-pipe, SS Race, Z8 Starter Button, Lamin-X, GM SMG Paddles, OEM CSL Steering, OEM CSL interior, OEM CSL Intake, EVOLVE Alpha-N Tune, BBS CH's, FX-R Projectors + 3k D2S, ST40's, DINAN Rear Strut Brace, BW Oil Cooler, 3.91 gears Soon To come.....OEM CSL Roof, Inner Projectors ........

Sun, Oct-19-2008, 04:57:18 PM	#5
SoulBladeZA ///M slvt Join Date: Jul 2006 Posts: 307 Reputation: 0 Location: Johannesburg	My temps are ~85 in winter, ~100 degrees centigrade in summer. TWS. __________________ 2006 E46 M3 Titan Silver/Black 4.1 BMW Motorsport diff, FRC software, K&N 57 CAI, ACS muffler

Sun, Oct-19-2008, 07:02:44 PM	#6
0-60Motorsports Established 1998.... Join Date: Mar 2004 Posts: 10,006 In the garage: '08 LEXUS IS F '08 VOLKSWAGEN GOLF '04 BMW M3 Reputation: 0 Location: Al Manama, Bahrain	Thank you for that! In Bahrain it gets pretty hot and like last friday at the F1 circuit track temps were up to 50c!!!! So if the RS is good enough for the heat i wouldnt mind using it! More inputs please from more of our members would be great Thank you all so much. __________________ EURO 04 M3 Current Mods: GC DA's, Eibach Sways, PF RTABs, RE RCAs, INTRAVEE II + Alpine KCA-420i, Black Roundels, ///MFEST Badges, Depo Corners, M5 SMG Knob, Screen protector for OEM 16:9 display, VCSL: Bumper + Race Lip, CF Trunk, CF Diffusor, DIETZ TV in Motion, AP Headers, RT Cats, SS Res X-pipe, SS Race, Z8 Starter Button, Lamin-X, GM SMG Paddles, OEM CSL Steering, OEM CSL interior, OEM CSL Intake, EVOLVE Alpha-N Tune, BBS CH's, FX-R Projectors + 3k D2S, ST40's, DINAN Rear Strut Brace, BW Oil Cooler, 3.91 gears Soon To come.....OEM CSL Roof, Inner Projectors ........

Sun, Oct-19-2008, 04:50:25 PM	#4
swaybar Banned Join Date: Jun 2008 Posts: 464 Reputation: 0	they are not the same oil however, both are approved to be used in the m3 bmw recommends castrol tws, but rs (cheaper) can also be used in fact it says somewhere on the air intake i believe that either tws or rs can be used. in some countries tws is not available and the closest is the rs typically they are made for different markets. i know tws is for US and Europe, but i know for a fact that some countries only get the rs for the ///m vehicles many people who used both reported oil operating temperature differences. with tws most people reported a consistent oil temp of 100 degrees C whereas with the rs they reported lesser temps (roughly 90) it's often debated what operating temp is best, but it's important to note that lower operating temp is not always better.

Sun, Oct-19-2008, 09:07:48 PM	#8
Makavelim3 M3 Devil Join Date: Jul 2007 Posts: 3,796 Reputation: 0 Location: Mississauga	Interesting Ejaz ... __________________ 2011 E92 M3, Competition Package, Le Mans Blue/Black/Carbon, MDCT Modds: Euro Front Bumper, BMW Carbon Fiber Front Splitter & boot spoiler, Akrapovic, Matt black competition wheels, SS brake lines, KW V3 + KW EDC isolators, EVO sport pulley kit, Macht Schnell air filter & scoop. Gone but not forgotten: Euro 2004 E46 M3

Sun, Oct-19-2008, 09:13:51 PM	#9
0-60Motorsports Established 1998.... Join Date: Mar 2004 Posts: 10,006 In the garage: '08 LEXUS IS F '08 VOLKSWAGEN GOLF '04 BMW M3 Reputation: 0 Location: Al Manama, Bahrain	I will call BMW Middle-East tomorrow and ask the technical section (if they have one) and then we will see what they have to say. __________________ EURO 04 M3 Current Mods: GC DA's, Eibach Sways, PF RTABs, RE RCAs, INTRAVEE II + Alpine KCA-420i, Black Roundels, ///MFEST Badges, Depo Corners, M5 SMG Knob, Screen protector for OEM 16:9 display, VCSL: Bumper + Race Lip, CF Trunk, CF Diffusor, DIETZ TV in Motion, AP Headers, RT Cats, SS Res X-pipe, SS Race, Z8 Starter Button, Lamin-X, GM SMG Paddles, OEM CSL Steering, OEM CSL interior, OEM CSL Intake, EVOLVE Alpha-N Tune, BBS CH's, FX-R Projectors + 3k D2S, ST40's, DINAN Rear Strut Brace, BW Oil Cooler, 3.91 gears Soon To come.....OEM CSL Roof, Inner Projectors ........

Sun, Oct-19-2008, 10:44:11 PM	#10
WillC310 Registered User Join Date: Jun 2005 Posts: 1,099 In the garage: '10 BMW M3 Reputation: 0 Location: Los Angeles Area	Also remember that E46M3's originally ran 5w30 for the first year and a half or so. It wasn't until the rod bearing failures that BMW changed their stance and said we have to run 10w60.

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