Friction Modifier
Thread Starter
|
Postmaster
Joined: Dec 2003
Posts: 2,659
Likes: 2
From: S/C Texas
Friction Modifier
Some oil companies use friction modifiers in their oil. Mobil for example states that 5w20-30 10w30 contain friction modifiers. Also states 10w40 20w50 SAE 30 do not have friction modifiers.
http://www.mobil.com/USA-English/Lub...Clean_Oils.asp
My question is why do those oils not contain a friction additive, and what would happen if you added a friction modifier?
http://www.mobil.com/USA-English/Lub...Clean_Oils.asp
My question is why do those oils not contain a friction additive, and what would happen if you added a friction modifier?
Posting Guru
Joined: May 2002
Posts: 1,673
Likes: 0
From: Chicago Area
Those oils probably do not contain a friction modifier because they do not claim to be energy conserving. As to what would happen if a friction modifier was added; unless one is a petroleum engineer working for a well equipped company, it would be difficult to reliably predict what might happen and any side effects!
Logistics Pro
Joined: Nov 2002
Posts: 4,788
Likes: 20
From: Mansfield, TX USA
Originally posted by MrBSS
unless one is a petroleum engineer working for a well equipped company, it would be difficult to reliably predict what might happen and any side effects!
unless one is a petroleum engineer working for a well equipped company, it would be difficult to reliably predict what might happen and any side effects!
Post Fiend
Joined: Jun 2001
Posts: 5,228
Likes: 5
From: Running Springs CA
One of the reasons that 10W-40 and 20W-50 do not contain friction modifiers is motorcyle use. Most bikes have a "wet" clutch that runs submerged in engine oil. Friction modifiers would cause slippage in that application and those are the most common SAE grades for bikes. Since no new cars or light trucks call for those grades, they do not need FMs for CAFE.
Friction modifiers are NOT anti-wear additives. Thicker and/or non "engergy conserving" oils have higher High Temperature High Shear (HTHS) viscosity to protect the engine parts but cause more hydraulic "drag". The idea is to leave only the very minumum possible layer of oil at the piston ring cylinder wall interface, the rest is more easily scraped away, using slightly less energy.
Jim
Friction modifiers are NOT anti-wear additives. Thicker and/or non "engergy conserving" oils have higher High Temperature High Shear (HTHS) viscosity to protect the engine parts but cause more hydraulic "drag". The idea is to leave only the very minumum possible layer of oil at the piston ring cylinder wall interface, the rest is more easily scraped away, using slightly less energy.
Jim
Posting Guru
Joined: May 2002
Posts: 1,673
Likes: 0
From: Chicago Area
Trending Topics
Thread Starter
|
Postmaster
Joined: Dec 2003
Posts: 2,659
Likes: 2
From: S/C Texas
I had a football coach named Schira once. He said alot of things, but never that it was sticky like molassas.
Oh, and I guess my question should be a little clearer....
Would adding a friction modifier to an unmodified oil such as SAE 30 benefit the oil and/or the engine? Why/Why not?
Cant seem to find much info around the net.
Oh, and I guess my question should be a little clearer....
Would adding a friction modifier to an unmodified oil such as SAE 30 benefit the oil and/or the engine? Why/Why not?
Cant seem to find much info around the net.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Post Fiend
Joined: Jan 2000
Posts: 5,860
Likes: 4
From: Metro Detroit (Redford)
Read the second post here before you do anything:http://theoildrop.server101.com/cgi/...;f=22;t=000150
Thread
Thread Starter
Forum
Replies
Last Post
gofast51004
1999 - 2003 7.3L Power Stroke Diesel
30
Oct 26, 2008 06:08 PM
