Havoline, Havoline Formula3, Havoline ProDS/Syn used to be one of my go to oils until the last batch(2018) where it was noisy in my Altima. I may try it again but, I am reluctant.
Huh... That's surprising to me CB...
You have the 2.5 L motor though right ??
My 3.5 L VQ motor runs very quiet on Havoline Pro DS 5w30.. and the other Havoline oils it runs very good on too.
As I mentioned, Havoline oils were once one of my go to oils. My engines always ran smooth & quiet.
At this one particular time, I also ran the same Havoline ProDS in my daughter's Mazda3 2.0L and it was fine in her engine. The Altima 2.5L was the loud one...IDKY! After 3-4 months, I changed back to QSUD and all was good again.
And it's not that I won't run HavProDS again however, the last batch did seem as though I had run some Mobil 1, which BTW, made every engine I ever ran M1 in, louder(more audible). I haven't used M1 either but, I have used Mobil Super Syn with great success...IDKY!
QSUD is always quiet in any engine I put it in and it's readily available and cheap. However, there was a thread or two last week about QSUD being loud in a members engine in which, everyone thought that was weird including myself.
I don't see Havoline much in my area any longer. However, I have on occasion seen the 6 qt boxes at Walmart, just not often enough.