I just got my Z the otherday and i was wondering what kind of oil i should use. i hear that synthetic oil is bad for the first couple thousand miles...is that tru? oh and do they use synthetic at places like valvoline?

 

yeah, you shouldn't swith to synthetic until after 5000 miles...I don't remember why, but just run the dino juice for a bit.

 

ppl say if u change to synthetic too early, the engine wont breakin properly

 

Sorry to thread jack but didn't want to start another oil change thread. What is the reason for changing the oil every 3 months or half year even if you didn't drive enough miles? I have 1800 miles on the car right now after 8 months, should i wait till 2000 miles or should i just do it now?

 

Dont believe anything about oil. Its all just a marketing gimmick to get people to spend money. I heard from an insider at nissan that our engines really dont even need oil. Ive got 15k miles and have never put any oil in it. sorry, just in a real sarcastic mode today. Going post to post being a smart azz. sorry. hahah BEN

 

From what I've been told, if you don't drive 3000 miles in 3 months, just change the oil every 3000 miles rather than 3 months. It seems like a waste to change the oil every 3 months if you only put 1800 miles on the car.

 

From what I understand regular oil breaks down after about 6 months, however a little different for synthetic.

I am at 1300 miles (4 months) and want to put in Mobil-1 since I have 20 quarts just sitting in my garage,

 

I waited until I hit 12k before switching to Mobil 1. It made a noticable difference IMO.

I usually go by mileage and not time when doing changes. *Or* i the car starts to feel a bit rough I'll get it changed early.

 

IIRC, my dealer told me I could change to synthetic after like 1500 miles. I'll probably wait until 3000 miles though.