GEN Y HITCH BALL MOUNT

Yesterday's ' Preventive Maintenance - Summer Oil Change ' ( Triple Digits Temps ) : Higher Viscosity Oils Required to properly lubricate the engine, in Hot Ambient Temperature Climates / Conditions & Towing.

Unfortunately,
Oil Stop didn't have any ' 5W-40 ' Gasoline -approved Synthetic Motor Oil in stock...:(

Soooo, I had to settle on the Mobile One ' 0W-40 '.


Use this chart to choose the right engine oil​



Per ' The Motor Oil Geek '... A typical ' OW-40 ' will degrade its ' VISCOCITY ' over time & wear down, to a ' 5W-30 ' grade Motor Oil.

P.S.:
The National Weather Reports are predicting today ' Triple Digits 100+
' for my local area...:oops:

EDIT: Online Subaru's Owners Manual ( 2023 ) Example: PAGE #458 Cooling System.

NOTE:
Engine Oil Viscosity ( Thickness ) affects fuel economy. Oils of a lower viscosity provides better fuel economy. However, in hot weather, oil of a higher viscosity is required to properly lubricate the engine.


Subaru Forester Wilderness (2023) manual​

 
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A ScanGauge is something to consider for towing. It plugs into the OBD plug and gets date from the onboard sensors. You can watch if the coolant or tranny temps are climbing so you can slow down or pull over. The ScanGauge II is the standard model. It costs 125 or so. The website will show what data you can access on your particular vehicle. I set mine to show coolant, tranny temp, volts and fuel rate. Bunch of other settings too.
 
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