First 4Runner, couple questions

[mtaylor777]

I recently picked up a 1990 4Runner. I have a couple questions and haven

 

[fourwd1]

What engine, 4 cyl or 6 cyl?

The skid plate in the front is either 8mm or 10mm bolts., can't remember which for sure.

 

[mtaylor777]

What engine, 4 cyl or 6 cyl?

The skid plate in the front is either 8mm or 10mm bolts., can't remember which for sure.

I'm sorry it is a 6 cyl.

 

[fourwd1]

4.8 qts w/filter change.

 

[mtaylor777]

Does it call for 10-30 or 10-40?