Joined
·
932 Posts
Hi all,
I recently experimented with my 2011 Outback (EJ253) with some Liqui-Moly MOS2 engine oil additive. It's supposed to be a friction modifier to keep wear and tear down and improve miles per gallon, operating temperature lower, and quieter operation, especially at engine start.
This last oil change interval ran me from April to September 2018, 5000 miles. I don't have first-hand experience with MOS2 during winter on very cold startups.
Here's some pictures for comparison. Notice how it's chocolatey-brown. This could be misinterpreted as a head gasket leak where the coolant is getting into the oil on older Subarus (not the FB or FA series engines), so just make note of it.
Also, keep in mind that the total volume of your oil plus additives should not exceed specifications or damage could result to the seals among other things in your engine. For example, the can is 500 mL. Your example car (not the Ascent, just an example) needs 4.5 L of oil; so now you subtract .5 L of oil and replace it with the MOS2.
My operating temperature at highway cruise speeds is about 194F. I'll see if it is hotter without it, which would potentially indicate more friction. Stay tuned.
I recently experimented with my 2011 Outback (EJ253) with some Liqui-Moly MOS2 engine oil additive. It's supposed to be a friction modifier to keep wear and tear down and improve miles per gallon, operating temperature lower, and quieter operation, especially at engine start.
This last oil change interval ran me from April to September 2018, 5000 miles. I don't have first-hand experience with MOS2 during winter on very cold startups.
Here's some pictures for comparison. Notice how it's chocolatey-brown. This could be misinterpreted as a head gasket leak where the coolant is getting into the oil on older Subarus (not the FB or FA series engines), so just make note of it.
Also, keep in mind that the total volume of your oil plus additives should not exceed specifications or damage could result to the seals among other things in your engine. For example, the can is 500 mL. Your example car (not the Ascent, just an example) needs 4.5 L of oil; so now you subtract .5 L of oil and replace it with the MOS2.
My operating temperature at highway cruise speeds is about 194F. I'll see if it is hotter without it, which would potentially indicate more friction. Stay tuned.
Attachments
-
254.2 KB Views: 241
-
283.9 KB Views: 199