Ford Spec 5w20 HT/HS oils appear to not meet API

Messages
1,011
Location
Montgomery, Alabama
Forgive me if I am mistaken but I thought API SL required a minimum of 2.9 HT/HS. I checked with Fords semi synthetic and Mobils mobil 1 synthetic and their values were 2.6 and 2.65 respectably. Amsoil XL-7500 has >2.9 HT/HS listed for the 5w20 which meets the 2.9 minimum.
 
Messages
509
Location
Las Vegas, NV
The spec for API SL and SJ for minimum HT/HS is 2.6 for the xx-20 viscosity. It is 2.9 for xx-30 viscosity. The API web site did not want to open the link I wanted but if you do a web search you should be able to eventually find a listing of all the specs. A search for API SL specs on google might work also.
 

wulimaster

Thread starter
Messages
1,011
Location
Montgomery, Alabama
Thanks on the 2.6 minimum. It looks like Ford and Mobil are formulated to barely meet minimum. I don't feel comfortable with HT/HS numbers this low. Somebody please tell me why I should feel comfortable. My toyota trucks bearings seem to prefer thicker oil.
 
Messages
352
Location
Ontario, Canada.
quote:
Originally posted by wulimaster: Thanks on the 2.6 minimum. It looks like Ford and Mobil are formulated to barely meet minimum. I don't feel comfortable with HT/HS numbers this low. Somebody please tell me why I should feel comfortable. My toyota trucks bearings seem to prefer thicker oil.
I am now trying a switch from Mobil 1 10w-30 to their Delvac 1 5w-40 in my Toyota Tacoma V-6, as it has a more robust additive package (primarily for diesel) and an extended drain capability which can only be beneficial all around I'd expect. I'm not aware though of the above mentioned statistics of this product for comparison.
 
Messages
6,388
Location
Washington St.
quote:
Originally posted by wulimaster: Thanks on the 2.6 minimum. It looks like Ford and Mobil are formulated to barely meet minimum. I don't feel comfortable with HT/HS numbers this low. Somebody please tell me why I should feel comfortable. My toyota trucks bearings seem to prefer thicker oil.
Especially in your Arizona heat, an API-SL rated 15W-40 oil would be a very good choice. Ken
 

Jay

Messages
1,607
Location
Idaho Falls, ID
Ford's Motorcraft 5w-20 HTHS is 2.65. How do you arrive at the HTHS for Mobil 1 0w-20 or Mobil Drive Clean 5w-20? They aren't published. "Somebody please tell me why I should feel comfortable." http://theoildrop.server101.com/ubb/ultimatebb.php?ubb=get_topic;f=3;t=000202 If you use a viscosity outside the manufacturer's recommendation, I suggest you do comparative oil analysis tests to ensure the oil is working for you as you expect. [ February 20, 2003, 03:18 PM: Message edited by: Jay ]
 
Top