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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Wed, Dec-27-2017, 03:06:26 PM   #71
SQ13
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Default Re: Castrol TWS to Castrol Supercar

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Originally Posted by nogoodname View Post
Most Audi dealers carry TWS. I wonder if they still do.
They have switched to the new stuff.
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Old Wed, Dec-27-2017, 04:50:51 PM   #72
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Default Re: Castrol TWS to Castrol Supercar

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Originally Posted by SQ13 View Post
They have switched to the new stuff.
Which is....??? Edge Supercar?
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Old Wed, Dec-27-2017, 07:55:12 PM   #73
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Default Re: Castrol TWS to Castrol Supercar

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Originally Posted by JamesSJ1 View Post
Which is....??? Edge Supercar?
Yes. Should be the same as TWS
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Old Wed, Dec-27-2017, 07:57:35 PM   #74
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Default Re: Castrol TWS to Castrol Supercar

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Originally Posted by zeta456 View Post
Looked up the spec sheets for TWS and Supercar and they are absolutely identical which strongly suggests to me that the oils are identical too. Pour point is -49 deg C.

Interestingly for this thread the Cold Cranking test viscosity is given as 4879 centipoise at -25 deg C while that for Castrol Edge 5W/30 LL-04 is 5700 at -30 . The test, ASTM D5293 can be carried out between -10 & -35 deg C

So the Castrol 10W/60 seems to have good Cold Cranking performance. I seem to remember comment on this before maybe on Bob is the Oil guy. Most other 10W/60's seem to be in the 6500/7000 range but I havent looked at them all.

Another reason for me to keep using Castrol 10W/60 for my car.
Yep I saw that on BITOG as well . I'll be sticking with the Castrol then unless I find myself dailying the car in real cold weather
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Old Wed, Dec-27-2017, 09:24:47 PM   #75
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Default Re: Castrol TWS to Castrol Supercar

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Originally Posted by bimmerdriver View Post
10w60 is very thick oil for the temperature you describe. If you're going to run it, keep the rpm and load down until the oil temperature increases or better, run something thinner until the ambient temperature increases.
I think I have this right but 10w60 means at cold temps the oil mimics a 60 weight oil which is appropriate for the engine (I think 10w is suitable well below freezing). So as long as your temps aren't below the functional parameters for a 10w then it should be fine.
If a hot engine is ok with 60 grade oil then a cold engine should be ok with a 10w oil that mimics a 60 weight oil.
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Old Wed, Dec-27-2017, 11:59:23 PM   #76
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Default Re: Castrol TWS to Castrol Supercar

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Originally Posted by JamesSJ1 View Post
Which is....??? Edge Supercar?

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Old Fri, Dec-29-2017, 04:55:37 AM   #77
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Default Re: Castrol TWS to Castrol Supercar

No, you don't have it right.
The first number followed by W is the Winter number. From memory, this is the weight behavior at 0F.
The second number is the weight behavior at 212F/100C.
You WANT the oil to behave as a lighter oil when cold (10 in this case), this is the whole concept behind multiviscosity oil. then, as it heats, it behaves like a thicker oil (60 in this case).
So the numbers and construction of the products try to get around (via additives) the basic concept that oil flows thinner as temp rises.

What you really want is the same viscosity regardless of temp; since with base oils this isn't possible, they give you products with numbers that show how it behaves at these two temps.
So at 0F, it behaves like a 10. at 212 it behaves like a 60 weight oil - which is much thinner at 212F than a straight 60 oil would be at low temps.

ADS

the first number is a Winter number
Quote:
Originally Posted by icecream View Post
I think I have this right but 10w60 means at cold temps the oil mimics a 60 weight oil which is appropriate for the engine (I think 10w is suitable well below freezing). So as long as your temps aren't below the functional parameters for a 10w then it should be fine.
If a hot engine is ok with 60 grade oil then a cold engine should be ok with a 10w oil that mimics a 60 weight oil.
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Old Fri, Dec-29-2017, 05:23:10 AM   #78
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Default Re: Castrol TWS to Castrol Supercar

Not only that, paying attention to actual viscosity and pour point is much more important than the vague XXwXX.

This engine doesn't quite need a 10w60 anyway unless under severe, prolonged use which, if we're honest, is not the case for the vast majority. Cold climate is more important than sustained rpms for most owners and your car will run beautifully on 5w30 in most cases. If you track it, hillclimb, autox or canyon carve in the desert, etc., don't run a 5w30.
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Old Fri, Dec-29-2017, 05:51:01 AM   #79
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Default Re: Castrol TWS to Castrol Supercar

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Originally Posted by RedM3/4 View Post
No, you don't have it right.
The first number followed by W is the Winter number. From memory, this is the weight behavior at 0F.
The second number is the weight behavior at 212F/100C.
You WANT the oil to behave as a lighter oil when cold (10 in this case), this is the whole concept behind multiviscosity oil. then, as it heats, it behaves like a thicker oil (60 in this case).
So the numbers and construction of the products try to get around (via additives) the basic concept that oil flows thinner as temp rises.

What you really want is the same viscosity regardless of temp; since with base oils this isn't possible, they give you products with numbers that show how it behaves at these two temps.
So at 0F, it behaves like a 10. at 212 it behaves like a 60 weight oil - which is much thinner at 212F than a straight 60 oil would be at low temps.

ADS

the first number is a Winter number
I thought that's the way it was, then read a bunch of stuff all over the place, gave up and ended up with that conclusion. Figured you'd want the oil to act like whatever viscosity the engine was built for even at cold temps. A straight 60 would be way too thick at cold temps but a 10w60 would act like a 60weight at operating temps even though the oil is really well below operating temps. Seems 10 weight is just too light but what do I know. Either way a 10w60 should be fine in most cold weather down to quite low temps as stated in the owners manual.
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Old Sat, Dec-30-2017, 05:20:42 AM   #80
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Default Re: Castrol TWS to Castrol Supercar

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Originally Posted by icecream View Post
I thought that's the way it was, then read a bunch of stuff all over the place, gave up and ended up with that conclusion. Figured you'd want the oil to act like whatever viscosity the engine was built for even at cold temps. A straight 60 would be way too thick at cold temps but a 10w60 would act like a 60weight at operating temps even though the oil is really well below operating temps. Seems 10 weight is just too light but what do I know. Either way a 10w60 should be fine in most cold weather down to quite low temps as stated in the owners manual.
Let me take a run at this. When you ask what weight of oil an engine requires, you really are asking what viscosity it requires at operating temperature. Therefore, if you decide the S54 requires 60 at operating temperature, that implies the viscosity. However, as you cool the oil, the viscosity increases. Straight 60 would be too thick to pour at 0 F. This is where multi-viscosity oil comes in. At operating temperature, 10 would be too light at operating temperature, but at at 0 F, it's still thicker than required, although, it's much thinner than 60. The multi viscosity rating X W Y means won't get thicker than X at low temperature and won't get thinner than Y at high temperature.
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Discussing Castrol TWS to Castrol Supercar in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)