Lets discuss Valvoline!
I have used Valvoline oil in the past and liked it. Haven't used them for the past 5 years and I am looking to use them back.
Has their oil formulation changed since after they were sold? It appears to me after looking at various UOAs is that their oils, especially Synpower, have less head room (TBN) than others.
Of course, this also depends on engine. If it were a Honda, I wouldn't be afraid to run it to 7.5-10K miles on Synpower, whether I4 or V6. I don't know if today's other manufacturers engines, or most modern engines, are hard on oil or not.
It appears to me Synpower seems to last 6K max in severe condition in Toyota V6s used in Sienna, RX350,ES350, and maybe in some Nissan V6s. This is based on my observation of UOAs, and I would consider 90% of those UOAs are severe.
So what are your thoughts? Valvoline Synpower price is at 7.50 per quart at Autozone, same as Mobil 1. Even at Walmart, its price is just a tad cheaper than Mobil 1.
I have used Valvoline oil in the past and liked it. Haven't used them for the past 5 years and I am looking to use them back.
Has their oil formulation changed since after they were sold? It appears to me after looking at various UOAs is that their oils, especially Synpower, have less head room (TBN) than others.
Of course, this also depends on engine. If it were a Honda, I wouldn't be afraid to run it to 7.5-10K miles on Synpower, whether I4 or V6. I don't know if today's other manufacturers engines, or most modern engines, are hard on oil or not.
It appears to me Synpower seems to last 6K max in severe condition in Toyota V6s used in Sienna, RX350,ES350, and maybe in some Nissan V6s. This is based on my observation of UOAs, and I would consider 90% of those UOAs are severe.
So what are your thoughts? Valvoline Synpower price is at 7.50 per quart at Autozone, same as Mobil 1. Even at Walmart, its price is just a tad cheaper than Mobil 1.