Quote:
Quote:
From the Amsoil site:
Grade 1......API*
100% Synthetic 0W-20 Motor Oil
SAE 5W-20 XL Synthetic Motor Oil
Series 2000 Synthetic 0W-30 Motor Oil
Above 9°F......15W-40
Above 0°F......10W-30
Above 19°F......20W-50
All Temps......5W-20
I'm confused, if it says you can use the heavier weights if a temp is above a certain degree, then why would it say to use 5w-20 for ALL temps.
Why doesn't it just say, on the website or in the manual, to just use 5w-20 period for all temps - why give options if they're not *really* necessary.
For instance, I have a vehicle that the owners manual specs everything from 5w-30 to 20w-50, BUT, it says to ONLY use 5w-30 if cold weather starts are an issue (or for fuel mileage purposes, but then also states that 5w-30 will not provide proper protection in high heat conditions, i.e. towing, extensive highway driving, etc.
I guess my point is, is if the Kia is fine on 5w-20 alone, the manual nor the Amsoil website should ever list other viscosities as *options*. Seems like waisted time/space to do so.
On a side note, I had a '97 Kia Sportage 4-cylinder - do not remember the exact engine code, etc or if it's the same as the newer engines - but, I ran 10w-30 Havoline in it, and it did just fine.