I have used the Pennzoil Conventional, a.k.a., Pennzoil Yellow Bottle(PYB) with great success and is held in very, very high regard here at BITOG. Mainly due to it's Walmart* pricing and rebate(s) to boot. Plus PYB had a very stout additive package for a conventional oil with a higher than average Total Base Number(TBN) to start with.
'80 Firebird FORMULA V8/4bbl-purchased "NEW"
'06 Mazda 3i 2.0L
'15 Nissan Altima 2.5 SV