syne164

Hi guy, i have a 2001 maxima and i just changed over to synthetic oil i used mobil 5 w 30 oil and i used a nissan oil filter this might sound stupid but is 4 1/4 qts of oil to little or to much and the car sound like it's idling rough and i can hear the engine more is it because i switched over and it has to break in the engine i only has 30,000 miles or is it the amount of oil please help thanks?

Guinness

I'm confused - what do you mean too little or too much? Sounds about right, but just check your dipstick...

In terms of idling rough - it really shouldn't make the car idle 'rough'... but in my experience there is a short "break-in" period when changing to synthetic without flushing - it's around 1500 miles... the conditioners in the synthetic end up cleaning all the seals, so to get rid of the junk make sure you change it again after 1500 then resume your normal change schedule.

What RPM are you idling at?

syne164

the rpm is a little over the 1 and when i change the oil at about 1,00 miles do i change the filter too?

syne164

sorry when it hit's 1,500 miles

Quicksilver

iTrader: (1)

Well, I would change the filter and oil at the same time, but that's just me...

Guinness

Absolutely change the filter at the same time...

And you should be idling around 700, not over 1k... getting your idle adjusted should help.

Cheers

sloppymax

iTrader: (8)

its ok for it to idle over 1k if its cold but after it warms up it should be lower whether you are auto or manual. if its above 1k when its warmed up then i would take it to the dealer to have it adjusted via the consult 2.

Young04

at 30K, maybe you can try replacing your spark plugs. i hear a lot of people have said their idle and ride in general smoothed out very noticeably.

Fezzik

iTrader: (2)

I would maybe change ur plugs or even clean your throttle body.