Had a discussion with another BITOG'ER (car51).....about engine noise. We both have used M-1 0w20 for awhile in our 03' Ford Focus'......and then did an OC with QSUD 0w20. Both of us noticed immediatly how much quieter and smoother our engines ran.
I'm wondering if any of you guys have had a similar experience after switching from M-1....to another synthetic.
I'm wondering if any of you guys have had a similar experience after switching from M-1....to another synthetic.