MolaKule
Staff member
A good read about viscosity modifiers from Lubrizol with an emphasis on ATF's.
http://image.lubrizolnews.com/lib/fefc16...csvid=210048454
http://image.lubrizolnews.com/lib/fefc16...csvid=210048454
Viscosity Modifiers and ATF's
- Thread starter MolaKule
- Start date
- Status
That's fascinating. Should be mandatory reading here.
Good read, thanks.
Quote:
Transportation lubricants generally
have recognised industry standards and
approvals that define the appropriate
quality and ensure formulations have
undergone rigorous testing to meet requirements.
For example, high- quality
engine oils in North America usually have
the ILSAC starburst and the API service
category prominently displayed on the
label signifying that the oils are formally
approved against these standards. In Europe,
high quality engine oils generally
carry both ACEA and various European
OEM credentials. Automotive gear oils
have the industry recognised SAE J2360
performance standard which requires
the lubricant to meet bench and rig tests
plus undergo a significant field trial to
gain approval.
Quote:
Often, formulators or blenders are
tempted to change the VM once a formulation
has completed testing and
the industry or OEM approval has been
gained. The two main reasons for this are
cost and convenience. An alternate VM
product might cost less-per-kg or might
have a lower treatment level. The blender
may also have a VM in bulk storage that is
more convenient to use.
Quote:
Transportation lubricants generally
have recognised industry standards and
approvals that define the appropriate
quality and ensure formulations have
undergone rigorous testing to meet requirements.
For example, high- quality
engine oils in North America usually have
the ILSAC starburst and the API service
category prominently displayed on the
label signifying that the oils are formally
approved against these standards. In Europe,
high quality engine oils generally
carry both ACEA and various European
OEM credentials. Automotive gear oils
have the industry recognised SAE J2360
performance standard which requires
the lubricant to meet bench and rig tests
plus undergo a significant field trial to
gain approval.
Quote:
Often, formulators or blenders are
tempted to change the VM once a formulation
has completed testing and
the industry or OEM approval has been
gained. The two main reasons for this are
cost and convenience. An alternate VM
product might cost less-per-kg or might
have a lower treatment level. The blender
may also have a VM in bulk storage that is
more convenient to use.
Quote:
For this reason,
OEMs have very specific performance
requirements and a stringent testing
protocol that must be completed to gain
approval. The approvals are very specific
and no part of the formulation can be
changed without rerunning much of the
original approval program usually in conjunction
with the OEM.
To ensure the right VM chemistry and
quality is being used in the application,
the use of a fully tested and approved
formulation is recommended
Sounds like you're better off staying with the OEM fluid like that GM paper from years ago suggested.
For this reason,
OEMs have very specific performance
requirements and a stringent testing
protocol that must be completed to gain
approval. The approvals are very specific
and no part of the formulation can be
changed without rerunning much of the
original approval program usually in conjunction
with the OEM.
To ensure the right VM chemistry and
quality is being used in the application,
the use of a fully tested and approved
formulation is recommended
Sounds like you're better off staying with the OEM fluid like that GM paper from years ago suggested.
This article made me appreciate ATF+4 more.
Sounds like Lubrizol is outing some of their previous customers (article is written by a business manager) for using more economically friendly competitor products. It's too bad PQIA can't let us know who is going to the dark side. But for those of us who pay attention to the UOA sections, we know what products suffer from VM problems. I've been impressed with some of the OEM lubricants lately though.
MolaKule
Staff member
Quote:
Sounds like you're better off staying with the OEM fluid like that GM paper from years ago suggested.
I think they are saying that one should stay with the VM that was used for testing and not be swayed into using a cheaper VM thatmay not perform as well. I don't think a conciensious formulator or blender would do that in defference to what the bean counters might say.
Sounds like you're better off staying with the OEM fluid like that GM paper from years ago suggested.
I think they are saying that one should stay with the VM that was used for testing and not be swayed into using a cheaper VM thatmay not perform as well. I don't think a conciensious formulator or blender would do that in defference to what the bean counters might say.
Last edited:
- Status
