What kind of oil are you running in your 3.8L Montero?

[All-Terrain]

Post what brand, type, weight oil you use in your 3.8L Montero, and what kind of climate you use it in.

I've been told 5w20 but that seems like such a narrow temperature range, especially for a hot climate...?

 

[jhill15]

I was running 5w30 castrol full synthetic. But.... when I had my timing belt changed I had them change the oil and having specified that I wanted synthetic I read my service record annnnndddd....bulk oil!!! I was a little mad. So its really hard to tell what 5w30 is lubing my engine. I live ********** dab in the middle of the east coast. Its usually 20to-10 with wind chill in the winter, and 90-100 at its hottest in the summer.

 

[Marutuk]

I believe we run 10w40 (will update in case I remembered wrong, will be at my car in a little bit), mainly because it's pretty warm here usually and 5w30's top range was on the low end for the summer weather here in SoCal.

 

[Eric M]

The manual should specify the proper oil. Mine gives you the recommended oil for various temperature ranges.