Years ago I recall that Mobil 1 was only available in a 15-50 weight grade and I was wondering was this the only way at that time they could make it? Why no other grades? I did run the 15-50 grade for years in a 2.8 V6 chevy that called for 5w30 without any issue but always wondered why no 5 or 10-30 at the time?
Mobil 1 15-50
- Thread starter Camprunner
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I though M1 first started as a 5w-20. And was advertised as a replacement for the 30 grades commonly available in the 70s
Yeah it was 5W-20 all day long. I started buying it around 1979 from the local Mobil station.
Originally Posted By: Camprunner
Years ago I recall that Mobil 1 was only available in a 15-50 weight grade
Your recollection may be failing you.
Years ago I recall that Mobil 1 was only available in a 15-50 weight grade
Your recollection may be failing you.
M1 15W-50 is a tie with M1 0W-40 for the best oils they make.
Both of those oils are phenomenal.
It is actually a 10W-50, as well..
Both of those oils are phenomenal.
It is actually a 10W-50, as well..
Strange .. Where I live the only grade avail back in the day (early 1980's) was the 15w50 grade. I don't recall ever seeing a 5w20 grade?
Do you know what the topic of this thread is about?
Originally Posted By: MalfunctionProne
M1 15W-50 is a tie with M1 0W-40 for the best oils they make.
Both of those oils are phenomenal.
It is actually a 10W-50, as well..
Originally Posted By: MalfunctionProne
M1 15W-50 is a tie with M1 0W-40 for the best oils they make.
Both of those oils are phenomenal.
It is actually a 10W-50, as well..
We had a similar thread to this one a while back. If only I could find it...
Anyway, if I remember what I looked up for that thread, the first grade offered in the US was 5W-20 but then soon after they offered one that was 5w30. Outside of the US it may (?) have been different if I remember correctly.
Here is something that might help:
http://www.mobil.com/australia-english/lcw/files/MPVL000226_TManual_small.pdf
Quote:
Mobil 1 synthetic oil was launched in Europe and Japan in 1973, and in North America a year later. Initially available only in SAE 5W-20 viscosity grade, the Mobil 1 line expanded during the next decade, and Mobil 1 quickly became the world’s leading synthetic motor oil.
Originally Posted By: Camprunner
Strange .. Where I live the only grade avail back in the day (early 1980's) was the 15w50 grade. I don't recall ever seeing a 5w20 grade?
Anyway, if I remember what I looked up for that thread, the first grade offered in the US was 5W-20 but then soon after they offered one that was 5w30. Outside of the US it may (?) have been different if I remember correctly.
Here is something that might help:
http://www.mobil.com/australia-english/lcw/files/MPVL000226_TManual_small.pdf
Quote:
Mobil 1 synthetic oil was launched in Europe and Japan in 1973, and in North America a year later. Initially available only in SAE 5W-20 viscosity grade, the Mobil 1 line expanded during the next decade, and Mobil 1 quickly became the world’s leading synthetic motor oil.
Originally Posted By: Camprunner
Strange .. Where I live the only grade avail back in the day (early 1980's) was the 15w50 grade. I don't recall ever seeing a 5w20 grade?
Funny what made me think of all this was I found an old Mobil 1 one quart 15w50 grade in my fathers garage. I should send in a virgin oil sample to see how different it is from today's 15w50. It is a quart I must have purchased in the early 1980's since my dad only used whatever cheep Dino oil he could find I know it was not his although I was surprised he did not ever use it as a top off oil the word (synthetic) on the quart must have scared him off... Lol .. I can hear him now "Darn fangdangle plastic oil get that s..t out of here!"
I would love to see a photo of that old Mobil1 container!
Originally Posted By: Camprunner
Funny what made me think of all this was I found an old Mobil 1 one quart 15w50 grade in my fathers garage. I should send in a virgin oil sample to see how different it is from today's 15w50. It is a quart I must have purchased in the early 1980's since my dad only used whatever cheep Dino oil he could find I know it was not his although I was surprised he did not ever use it as a top off oil the word (synthetic) on the quart must have scared him off... Lol .. I can hear him now "Darn fangdangle plastic oil get that s..t out of here!"
Originally Posted By: Camprunner
Funny what made me think of all this was I found an old Mobil 1 one quart 15w50 grade in my fathers garage. I should send in a virgin oil sample to see how different it is from today's 15w50. It is a quart I must have purchased in the early 1980's since my dad only used whatever cheep Dino oil he could find I know it was not his although I was surprised he did not ever use it as a top off oil the word (synthetic) on the quart must have scared him off... Lol .. I can hear him now "Darn fangdangle plastic oil get that s..t out of here!"
Well yeah, by the early '80s they probably had a whole range of grades available. They may have even in '79 when I started buying it, but I only remember the 5W-20 on the rack at the (one and only) Mobil station in town.
My dad was a WWII Army Air Corps veteran and I recall him saying that they used synthetic oil in the bomber engines, and therefore thought this would be good for cars too.
My dad was a WWII Army Air Corps veteran and I recall him saying that they used synthetic oil in the bomber engines, and therefore thought this would be good for cars too.
Originally Posted By: Camprunner
Strange .. Where I live the only grade avail back in the day (early 1980's) was the 15w50 grade. I don't recall ever seeing a 5w20 grade?
Your mistaken. I started using M1 5-20 in 1978. 15-50 wasn't available in the early 80s.
Strange .. Where I live the only grade avail back in the day (early 1980's) was the 15w50 grade. I don't recall ever seeing a 5w20 grade?
Your mistaken. I started using M1 5-20 in 1978. 15-50 wasn't available in the early 80s.
Originally Posted By: NH73
Originally Posted By: MalfunctionProne
M1 15W-50 is a tie with M1 0W-40 for the best oils they make.
Both of those oils are phenomenal.
It is actually a 10W-50, as well..
So why do you say that? How can be a 10w50 too?
10W is a rating of flow ability at a temperature lower than 15W is rated. 15W/50 Mobil 1 meets the 10W rating, as well as the 15W rating.......Mobil just chooses not to market that capability, probably since they also sell 5W/50.
Originally Posted By: MalfunctionProne
M1 15W-50 is a tie with M1 0W-40 for the best oils they make.
Both of those oils are phenomenal.
It is actually a 10W-50, as well..
So why do you say that? How can be a 10w50 too?
10W is a rating of flow ability at a temperature lower than 15W is rated. 15W/50 Mobil 1 meets the 10W rating, as well as the 15W rating.......Mobil just chooses not to market that capability, probably since they also sell 5W/50.
Originally Posted By: kschachn
Do you know what the topic of this thread is about?
Originally Posted By: MalfunctionProne
M1 15W-50 is a tie with M1 0W-40 for the best oils they make.
Both of those oils are phenomenal.
It is actually a 10W-50, as well..
The useless [censored] posts have restarted. Until he gets suspended again and comes back with his sixth new username.
Do you know what the topic of this thread is about?
Originally Posted By: MalfunctionProne
M1 15W-50 is a tie with M1 0W-40 for the best oils they make.
Both of those oils are phenomenal.
It is actually a 10W-50, as well..
The useless [censored] posts have restarted. Until he gets suspended again and comes back with his sixth new username.
Originally Posted By: silverrat
Originally Posted By: kschachn
Do you know what the topic of this thread is about?
Originally Posted By: MalfunctionProne
M1 15W-50 is a tie with M1 0W-40 for the best oils they make.
Both of those oils are phenomenal.
It is actually a 10W-50, as well..
The useless [censored] posts have restarted. Until he gets suspended again and comes back with his sixth new username.
Explain what you mean? Is this guy saying something thats false? It doesn't make sense how a oil can qualify under 2 weights, and I was questioning that he only gave vague answers.
Originally Posted By: kschachn
Do you know what the topic of this thread is about?
Originally Posted By: MalfunctionProne
M1 15W-50 is a tie with M1 0W-40 for the best oils they make.
Both of those oils are phenomenal.
It is actually a 10W-50, as well..
The useless [censored] posts have restarted. Until he gets suspended again and comes back with his sixth new username.
Explain what you mean? Is this guy saying something thats false? It doesn't make sense how a oil can qualify under 2 weights, and I was questioning that he only gave vague answers.
Last edited:
Originally Posted By: NH73
Explain what you mean? Is this guy saying something thats false? It doesn't make sense how a oil can qualify under 2 weights, and I was questioning that he only gave vague answers.
To put it another way, all 10W oils qualify as 15W oils. The reverse is not necessarily true. If a manufacturer chooses to sell an oil that meets the specs of a 10W as a 15W, there is nothing to prevent it.
Explain what you mean? Is this guy saying something thats false? It doesn't make sense how a oil can qualify under 2 weights, and I was questioning that he only gave vague answers.
To put it another way, all 10W oils qualify as 15W oils. The reverse is not necessarily true. If a manufacturer chooses to sell an oil that meets the specs of a 10W as a 15W, there is nothing to prevent it.
Originally Posted By: 4wheeldog
To put it another way, all 10W oils qualify as 15W oils. The reverse is not necessarily true. If a manufacturer chooses to sell an oil that meets the specs of a 10W as a 15W, there is nothing to prevent it.
A manufacturer can't do that, per the SAE standards the lubricant has to be labeled for the specifications it meets.
From a previous thread on this subject:
Quote:
As stated in SAE standard J300, "Since each W grade is defined on the basis of maximum cranking and pumping viscosities as well as minimum Kinematic viscosities at 100’C, it is possible for an oil to satisfy the requirements of more than one W grade. In labeling either a W grade or a multiviscosity grade oil, only the lowest W grade satisfied may be referred to on the label."
SAE J300 goes on to say "A manufacturer may not release a product if its CCS viscosity as measured by the manufacturer is less than or equal to the stated limit of the next lower W grade."
To put it another way, all 10W oils qualify as 15W oils. The reverse is not necessarily true. If a manufacturer chooses to sell an oil that meets the specs of a 10W as a 15W, there is nothing to prevent it.
A manufacturer can't do that, per the SAE standards the lubricant has to be labeled for the specifications it meets.
From a previous thread on this subject:
Quote:
As stated in SAE standard J300, "Since each W grade is defined on the basis of maximum cranking and pumping viscosities as well as minimum Kinematic viscosities at 100’C, it is possible for an oil to satisfy the requirements of more than one W grade. In labeling either a W grade or a multiviscosity grade oil, only the lowest W grade satisfied may be referred to on the label."
SAE J300 goes on to say "A manufacturer may not release a product if its CCS viscosity as measured by the manufacturer is less than or equal to the stated limit of the next lower W grade."
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