New Chevron Supreme SN data sheet
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Thanks for posting this.
ZDDP went down
Originally Posted By: Chris142
ZDDP went down
Only for the non-resource-conserving viscosity grades. For the resource-conserving grades, the change isn't significant.
ZDDP went down
Only for the non-resource-conserving viscosity grades. For the resource-conserving grades, the change isn't significant.
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*IF* Checkers has this on sale for $1.99 a quart I'm backing the truck up to the door.
I've always had excellent results from Chevron oil and prices are only going one way.
Thanks for the post! Now to watch for the sales......
I've always had excellent results from Chevron oil and prices are only going one way.
Thanks for the post! Now to watch for the sales......
You and me both Bill! I'll be interested to see how well the SN oils hold their TBN. The initial TBN is up a bit for Chevron from SM to SN.
Just picked up a case of this at Costco the other day with a $7 coupon making it a $1.83qt.
I saw this post and decided to check if I got the SN stuff.
The case is dated 12/23/2010 and sure enough the bottles show it to be SN.
Great oil, decent price. Hope this doesn't change.
I saw this post and decided to check if I got the SN stuff.
The case is dated 12/23/2010 and sure enough the bottles show it to be SN.
Great oil, decent price. Hope this doesn't change.
Originally Posted By: Finklejag
The viscosity index went from 151 to 157.
I thought I'd post this to go along with your information in case somebody wants to know what Viscosity
Index is. I was reading a little bit of this last night at Amsoil's site. They explain it pretty good:
Quote:
The less change a motor oil has from high to low temperatures gives it a high Viscosity Index. Synthetic motor oils that are made from Group IV (4) PAO base stocks have Viscosity Indexes of more than 150 because they are manufactured to be a lubricant and don't have the paraffin that causes the thickening as they cool. But petroleum based motor oils (Group I (1) & II (2)) usually have Viscosity Indexes of less than 140 because they tend to thicken more at the colder temperature due to the paraffin despite the addition of Viscosity Improving additives. The higher the Viscosity Index number the less thinning and thickening the motor oil has. In other words, high number good, low number bad. Low numbers thicken more as they cool and thin more hot. You see these Viscosity Index ratings posted on data sheets of motor oils provided by the manufacturer.
The viscosity index went from 151 to 157.
I thought I'd post this to go along with your information in case somebody wants to know what Viscosity
Index is. I was reading a little bit of this last night at Amsoil's site. They explain it pretty good:
Quote:
The less change a motor oil has from high to low temperatures gives it a high Viscosity Index. Synthetic motor oils that are made from Group IV (4) PAO base stocks have Viscosity Indexes of more than 150 because they are manufactured to be a lubricant and don't have the paraffin that causes the thickening as they cool. But petroleum based motor oils (Group I (1) & II (2)) usually have Viscosity Indexes of less than 140 because they tend to thicken more at the colder temperature due to the paraffin despite the addition of Viscosity Improving additives. The higher the Viscosity Index number the less thinning and thickening the motor oil has. In other words, high number good, low number bad. Low numbers thicken more as they cool and thin more hot. You see these Viscosity Index ratings posted on data sheets of motor oils provided by the manufacturer.
Originally Posted By: ted s
SO in english what does this mean?
the higher the viscosity in a finished oil means a higher level of viscosity improvers.
SO in english what does this mean?
the higher the viscosity in a finished oil means a higher level of viscosity improvers.
Originally Posted By: ted s
SO in english what does this mean?
They're just telling you that petroleum based oil thins out with an increase in heat; and to counteract the thinning out, it needs viscosity index improvers. PAO based oil doesn't thin out with heat as easily as petroleum based oils; therefore, it doesn't need the viscosity index improvers that petroleum based oil needs.
SO in english what does this mean?
They're just telling you that petroleum based oil thins out with an increase in heat; and to counteract the thinning out, it needs viscosity index improvers. PAO based oil doesn't thin out with heat as easily as petroleum based oils; therefore, it doesn't need the viscosity index improvers that petroleum based oil needs.
Thanks for the Costco heads up!!! I bought 3 cases so I have oil for a while and the SN should last for the longer oil change intervals.
Originally Posted By: addyguy
Don't like the changes that are coming with SN - oils are getting thicker, and the cold-temp properties are suffering.
Although it is only slight, it is a definite trend - hey, I thought 'thin was in'????
Not in my world it's not
Don't like the changes that are coming with SN - oils are getting thicker, and the cold-temp properties are suffering.
Although it is only slight, it is a definite trend - hey, I thought 'thin was in'????
Not in my world it's not
Does the new SN version have a good amount of Moly as the SM version?
I see in this VOA thread that the Moly count is only 79..
https://bobistheoilguy.com/forums/threads/chevron-supreme-10w30.149227/
I see in this VOA thread that the Moly count is only 79..
https://bobistheoilguy.com/forums/threads/chevron-supreme-10w30.149227/
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