Lately, I've noticed increased noise when I start my Nissan which has the QR25DE engine. It's for that first second when it fires up after which it quiets down, the RPMs fall, and it goes to idle. It only happens when the car has been sitting all night or all day while I'm at work.
I'm 5300 miles into a planned 6000 mile OCI. It's my second consecutive fill of G-OIL 5W-30 and I'm using the same DENSO 150-1010 filter I've used for the past 6 intervals. The filter cross-refs to a PL14610 and is the slightly longer variant of the PL14612 "shorty" that is spec.
It's never been what I would describe as super quiet at startup, but it does seem noisier lately.
What do you guys think it may be? Fatigue or failure of the filter's anti-drainback valve and it's letting oil drain out while sitting? Symptomatic of anything I should be concerned about?
I'm 5300 miles into a planned 6000 mile OCI. It's my second consecutive fill of G-OIL 5W-30 and I'm using the same DENSO 150-1010 filter I've used for the past 6 intervals. The filter cross-refs to a PL14610 and is the slightly longer variant of the PL14612 "shorty" that is spec.
It's never been what I would describe as super quiet at startup, but it does seem noisier lately.
What do you guys think it may be? Fatigue or failure of the filter's anti-drainback valve and it's letting oil drain out while sitting? Symptomatic of anything I should be concerned about?