I switched to full synthetic at 3750 miles (first oil change), and guess what? At about 7000 to 10000 miles my MPG dramatically improved!hfelknor said:For various reasons I did not run Synthetic in the Murano.
And guess what?
At about 7000 to 10000 miles my MPG dramatically improved! What has that to do with Synthetic oil?
Well it was now as if the engine was now "broken in"...........
It seems everybody here has had the same experience.
The engine is definitely "looser" after 7-10K.
So, there appears to be justification for waiting before changing to Synthetic.
If synthetic oil is good enough for Corvettes and Porsches, I am sure it is OK for your MO.yyyyyy said:please don't laugh....![]()
I know this may sound dumb, but I just want to take care of my mo (I have a tendency to keep cars for a long time)...
I recently got a new mo, changed the oil first at 1500 (older cars had the break-in oil, not sure about mo, but did it anyway). However, full syn was used.
I knew somewhat about the break-in concept, but always thought the period was like 700 to 1000 miles (I guess I was off by a whole digit).
So should I do another change ASAP to switch back to regular? to help the break-in process untill 7000 - 10000? basically, if there is any chance of hurting the car then I would want to fix it..... thanks.
No I do not think you need to switch back to dino oil. In the latest issue of one of the car mags (it might be Motortrend) there was a Q&A on this topic and it was agreed that most breakin occurs in the first few hundred miles for the car.yyyyyy said:please don't laugh....![]()
I know this may sound dumb, but I just want to take care of my mo (I have a tendency to keep cars for a long time)...
I recently got a new mo, changed the oil first at 1500 (older cars had the break-in oil, not sure about mo, but did it anyway). However, full syn was used.
I knew somewhat about the break-in concept, but always thought the period was like 700 to 1000 miles (I guess I was off by a whole digit).
So should I do another change ASAP to switch back to regular? to help the break-in process untill 7000 - 10000? basically, if there is any chance of hurting the car then I would want to fix it..... thanks.
Well, at just under 10k on mine now, I can see a regular increase in my MPG over time. I'll post soon with updated results in my other thread (my excel spreadsheet tracking all kinds of things). And if anything, I drive more agressively now that I did in the first 5k miles.hfelknor said:I Don't disagree.
But, what is the basis for the increased MPG after 7-10K?
Many of us that keep records can prove that this does happen?
could it be the driver who, after having a good time, just drives in a more restrained manner after familiarity takes over? (Sounds like Marriage.........)
or what?
Homer
You have low mile cars so you may not even be there but do you think ypu will have any issues with warranty work due to infrequent oil chnages?Ramdram said:I change my filter at 10k miles and filter and oil at 20k miles. (When changing filter only - add a qt to compensate for loss of removing the filter)
If within the warranty period, I would definitely change oil at least as frequently as Maintenance Schedule 2 (7500 miles), not because it must have it (clearly with Amsoil or even Mobil One it does not) but to limit your liability for warranty claims. As we have read here, Nissan is impossible when it comes to warranty claims.zebelkhan said:
You have low mile cars so you may not even be there but do you think ypu will have any issues with warranty work due to infrequent oil chnages?