Originally Posted By: oil_film_movies
Originally Posted By: dogememe
I'm sick of buying 5w-20 when my other two cars take 5w-30.
Correction: Two of your cars are spec'ed for 5w20. (Only your old Suburban is spec'ed for 5w30.)
Therefore, your new strategy might be this: Buy Valvoline MaxLife Full Synthetic 5w20 for ALL THREE. Then, in your Suburban, put in STP Oil Treatment (200 cSt KV100) to nudge visc upward just a bit.
Also, AC-Delco might be prone to getting holes, tears in them. One bitog user on here noticed that, and it resembled the infamous Purolator tearing issues.
Fram Ultra oil filters are really best, but your Wix-NAPAgold oil filter or Royal Purple are good choices as well.
I'm sorry, there is no way STP oil treatment, or any other aftermarket oil additive, is going to end up in my engines. Nor am I going to put 5W-20 in a 213K mile small block Chevy (in the Suburban) that I totally beat the [censored] out of every time I drive it (though I don't drive it much)...
As for the filters, for the Escape and Suburban I'm going to use whatever I have floating around, which is ACDelco, Microgard, and Wix, but the Crown Vic is going to live on Royal Purple oil filters forever - yes they cost me $10 no I don't care.
Thank you for the advice regardless.