oil change
05 June 2005, 05:32 PM
#5
Scooby Regular
I agree, 0W is way too thin!! especially on an 11 year old car! 
5W is thin
10W is about right
15W is too thick and causes drag on the turbo and engine
IMHO of course!
Pete
5W is thin
10W is about right
15W is too thick and causes drag on the turbo and engine
IMHO of course!
Pete
05 June 2005, 06:24 PM
#6
0w-50 Pro-S doesn't exist!!!! LOL
I think you'll find Pro-s is 10w-50
So everybody stop the flipping "too thin" scare mongering and educate yourselves before making *****-nilly judgements based on hear say on a board full of "*****"
Actually, 0w-50...if you could actually buy any would be THICKER than a 10w-40 at normal operating temperatures or higher.
Please remember we are talking multigrade oils not monograde: The first 2 numbers are the COLD viscosity ratings (below zero degrees C) ...the last two numbers are the HOT viscosity rating.
http://www.millersoils.net/pdf_downl..._explained.pdf
I think you'll find Pro-s is 10w-50
So everybody stop the flipping "too thin" scare mongering and educate yourselves before making *****-nilly judgements based on hear say on a board full of "*****"
Actually, 0w-50...if you could actually buy any would be THICKER than a 10w-40 at normal operating temperatures or higher.
Please remember we are talking multigrade oils not monograde: The first 2 numbers are the COLD viscosity ratings (below zero degrees C) ...the last two numbers are the HOT viscosity rating.
http://www.millersoils.net/pdf_downl..._explained.pdf
Last edited by ALi-B; 05 June 2005 at 06:27 PM.
05 June 2005, 06:41 PM
#7
Furthermore (as no doubt plenty of people can't be arsed to fire up acrobat reader )this is the specific limits set out by the SAE cold temperature "w" rating (the first one/two numbers in the viscosity rating of a multigarde oil)
SAE Viscosity Limits - cP @ Sub Zero Conditions
0W = 6200 @ -35°C
5W = 6600 @ -30°C
10W = 7000 @ -25°C
15W = 7000 @ -20°C
20W = 9500 @ -15°C
25W = 13000 @ -10°C
This is the actual viscosity limits set out by the SAE for the hot temperature rating of 100°C. (The last two numbers in a oil viscosity rating of a multigrade oil):
SAE rating = viscosity range @ 100 °C (Cst)
20 = 5.6 to 9.3 Cst
30 = 9.3 to 12.5 Cst
40 = 12.5 to 16.3 Cst
50 = 16.3 to 21.9 Cst
60 = 21.9 26.1 Cst
So a example, a 0w-50 verses a 10w-40:
0w-50 will be 6200cP at -35°C and 16.3 to 21.9Cst at 100°C
and
10w-40 will be 7000cP at -25°C and 12.5 to 16.3 Cst at 100°C
The higher the cP or Cst the thicker the oil, the lower, the thinner. So 0w-50 is THINNER than 10w-40w at -25°C But 0w-50 is THICKER than 10w-40 at 100°C
The same tables and rules apply to all mutigrade oils
)this is the specific limits set out by the SAE cold temperature "w" rating (the first one/two numbers in the viscosity rating of a multigarde oil)SAE Viscosity Limits - cP @ Sub Zero Conditions
0W = 6200 @ -35°C
5W = 6600 @ -30°C
10W = 7000 @ -25°C
15W = 7000 @ -20°C
20W = 9500 @ -15°C
25W = 13000 @ -10°C
This is the actual viscosity limits set out by the SAE for the hot temperature rating of 100°C. (The last two numbers in a oil viscosity rating of a multigrade oil):
SAE rating = viscosity range @ 100 °C (Cst)
20 = 5.6 to 9.3 Cst
30 = 9.3 to 12.5 Cst
40 = 12.5 to 16.3 Cst
50 = 16.3 to 21.9 Cst
60 = 21.9 26.1 Cst
So a example, a 0w-50 verses a 10w-40:
0w-50 will be 6200cP at -35°C and 16.3 to 21.9Cst at 100°C
and
10w-40 will be 7000cP at -25°C and 12.5 to 16.3 Cst at 100°C
The higher the cP or Cst the thicker the oil, the lower, the thinner. So 0w-50 is THINNER than 10w-40w at -25°C But 0w-50 is THICKER than 10w-40 at 100°C
The same tables and rules apply to all mutigrade oils
Last edited by ALi-B; 05 June 2005 at 06:47 PM.
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05 June 2005, 06:59 PM
#9
Scooby Regular
Originally Posted by ALi-B
Furthermore (as no doubt plenty of people can't be arsed to fire up acrobat reader )this is the specific limits set out by the SAE cold temperature "w" rating (the first one/two numbers in the viscosity rating of a multigarde oil)
SAE Viscosity Limits - cP @ Sub Zero Conditions
0W = 6200 @ -35°C
5W = 6600 @ -30°C
10W = 7000 @ -25°C
15W = 7000 @ -20°C
20W = 9500 @ -15°C
25W = 13000 @ -10°C
This is the actual viscosity limits set out by the SAE for the hot temperature rating of 100°C. (The last two numbers in a oil viscosity rating of a multigrade oil):
SAE rating = viscosity range @ 100 °C (Cst)
20 = 5.6 to 9.3 Cst
30 = 9.3 to 12.5 Cst
40 = 12.5 to 16.3 Cst
50 = 16.3 to 21.9 Cst
60 = 21.9 26.1 Cst
So a example, a 0w-50 verses a 10w-40:
0w-50 will be 6200cP at -35°C and 16.3 to 21.9Cst at 100°C
and
10w-40 will be 7000cP at -25°C and 12.5 to 16.3 Cst at 100°C
The higher the cP or Cst the thicker the oil, the lower, the thinner. So 0w-50 is THINNER than 10w-40w at -25°C But 0w-50 is THICKER than 10w-40 at 100°C
The same tables and rules apply to all mutigrade oils
)this is the specific limits set out by the SAE cold temperature "w" rating (the first one/two numbers in the viscosity rating of a multigarde oil)SAE Viscosity Limits - cP @ Sub Zero Conditions
0W = 6200 @ -35°C
5W = 6600 @ -30°C
10W = 7000 @ -25°C
15W = 7000 @ -20°C
20W = 9500 @ -15°C
25W = 13000 @ -10°C
This is the actual viscosity limits set out by the SAE for the hot temperature rating of 100°C. (The last two numbers in a oil viscosity rating of a multigrade oil):
SAE rating = viscosity range @ 100 °C (Cst)
20 = 5.6 to 9.3 Cst
30 = 9.3 to 12.5 Cst
40 = 12.5 to 16.3 Cst
50 = 16.3 to 21.9 Cst
60 = 21.9 26.1 Cst
So a example, a 0w-50 verses a 10w-40:
0w-50 will be 6200cP at -35°C and 16.3 to 21.9Cst at 100°C
and
10w-40 will be 7000cP at -25°C and 12.5 to 16.3 Cst at 100°C
The higher the cP or Cst the thicker the oil, the lower, the thinner. So 0w-50 is THINNER than 10w-40w at -25°C But 0w-50 is THICKER than 10w-40 at 100°C
The same tables and rules apply to all mutigrade oils
05 June 2005, 07:42 PM
#13
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From the man who wants a new back box!!! 
How many times have you have slagged off anyone who wants to change more than an air freshener on their scoob???
One third of your posts must have been about how good the impreza is standard, and why on earth would someone buy a car and then be dumb enough to modify it!!
You are a two faced, sad old man Pete.
Still wouldn't swap ya for the world though!
How many times have you have slagged off anyone who wants to change more than an air freshener on their scoob???
One third of your posts must have been about how good the impreza is standard, and why on earth would someone buy a car and then be dumb enough to modify it!!
You are a two faced, sad old man Pete.
Still wouldn't swap ya for the world though!
05 June 2005, 08:38 PM
#15
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Originally Posted by ALi-B
Aww come on, its easy to understand....and this is comming from someone who can't do integration or differentiation without the need for Mathlab to do it all for me
06 June 2005, 04:11 PM
#20
If that's the bargain Silkolene 10w-50 PRO S on ebay, don't touch it!!!
If it's in metal 4 litres cans, it's at least 7 years old
Pro S actually comes in 5L cans, plastic.
You've been warned! Stock clearance I think not! I have to wait between 5 and 15 days for my fresh orders of PRO S to be bottled, there is no old stock other than on some Dealers shelf!
Cheers
Simon
If it's in metal 4 litres cans, it's at least 7 years old
Pro S actually comes in 5L cans, plastic.
You've been warned! Stock clearance I think not! I have to wait between 5 and 15 days for my fresh orders of PRO S to be bottled, there is no old stock other than on some Dealers shelf!
Cheers
Simon
06 June 2005, 04:18 PM
#21
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Originally Posted by pslewis
I agree, 0W is way too thin!! especially on an 11 year old car!
5W is thin
10W is about right
15W is too thick and causes drag on the turbo and engine
IMHO of course!
Pete
5W is thin
10W is about right
15W is too thick and causes drag on the turbo and engine
IMHO of course!
Pete
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