Greeting all. My 4th Gen Maxima is no more, to my chagrin. I ended up replacing it with a 2009 G37 with a notch under 70k on the odometer, so I'm now looking for a new forum and a new parts vendor set.

I have a Chilton Asian Service Manual Vol. 3 en route (it was the only G37 manual I could find), but I have a question:
The mom and pop local cars salemen I bought my G37 from said the G37 takes a synblend, and at the moment it has a Castrol synblend in it. The car's background is corporate lease, so would the Infinity dealership indeed default to a synblend? If it is indeed accurate information, is there a problem going from synblend to purely synethic e.g. Pensoil Platinum or would it be imprudent to switch to full synthetic like it would be if it was running on dino oil this long? Or should I just stick with a blend? (I don't get the point of a blend if I have to change it just as often as dino.)

Thanks

 

I think you will be fine with conventional, blend ,or synthetic. If you have service records you might be able to see which service interval they followed. Infiniti recommends oil changes at 3750 or 7500 miles. At 3750 it doesnt matter what you use since the change interval is so short.
If you want to go 7500 then i would lean more towards synthetic.

Enjoy your new car.

 

Welcome. It doesn't matter what oil was used before. If you want to switch to a full synthetic you can. The real benefit of synthetic is extended oil change intervals. If you are not going to run it longer than regular dino oil, you're just throwing away money. There is a thread in the general tech forum with used oil analyses if you want to see sho different oils perform in the VQ37 engine. Best of luck.

BTW, my work car is a 4th gen Maxima that I've had since 96. 231K and still going strong.

 

Cool deal, thanks. I'll go Pensoil Platnium with the Purlator PL14610 route and plan to change every 5k. (I changed every 3k with Valvoline dino in the Maxima.)

Regarding your 4th gen Maxima, well, you're making me jealous.

 

Penzoil Ultra has had some pretty good UOA up to almost 10K miles.

 

Yeah, I've read a little about it here:
Pennzoil Oil Type for the G - Platinum or Ultra?

I've been reading over in the blackstone lab thread though, and I think I'm seeing something of a trend of low viscosity reports concerning the Pennzoil Platinum in very hot conditions. I may just use Platinum for non-summer driving and spend the couple of dollars more for Ultra for summer driving.

 

I think the best combo is M1 15K oil with the Bosch DistancePlus oil filter. I run that to 5500 miles. No issues!

http://www.boschautoparts.com/Filter....aspx#overview

 

[QUOTE=GTLAW;3586521]I think the best combo is M1 15K oil with the Bosch DistancePlus oil filter. I run that to 5500 miles. No issues!
/QUOTE]

I have been using M1 5-30EP for 5K intervals and the UOAs I have gotten back show everything is good, except the SUS Viscosity has been low on all (5) of them. I am going to try Pennzoil Ultra at the next change an see if it holds up any better.

 

First I've heard of that filter. Thanks for mentioning it. I'm wondering if it's approaching dimishing returns for twice the price compared to the PL14610 though.
I decided to start with Pennzoil Premium for a base standard, and plan to try Ultra after that. I'll be interested in your results, hobbs, regarding viscosity with Ultra. (I'll to subscribe to the blackstone lab thread.)

 

I had 181k on my 97 maxima when someone pulled a giant tree down on top of it. It was like that Geico commercial except not funny at all. Loved that car, but definitely enjoying my G. BTW, the factory service manual is posted under the sedan section. Tells you how to do everything and it's free!

 

It doesn't matter what oil you use honestly as long as you change it at regular intervals. If you want to go extended intervals, then you should use synthetic oil. Any synthetic oil should be fine for 7500 miles.

 

[QUOTE=Black Betty;3586007] "The real benefit of synthetic is extended oil change intervals. If you are not going to run it longer than regular dino oil, you're just throwing away money."

There is at least one additional benefit of synthetic oil for those of us that live where it gets cold. The pour point of most synthetics is lower than for same weight dino oils. The benefit of this is that during cold morning starts oil will flow easier and probably reduce startup wear compared to dino oil.

 

Ran M1 in my VQ35DE, VQ35HR and now in the VQ37. Will eliminate the famous VQ ticking.

 

[QUOTE=blueslate11;3596280]That's true; I simply forget about stuff like that being an advantage because I live in a warm weather climate where that's never an issue.

 

[QUOTE=Black Betty;3596634]Sure, rub it in...haha

Thanks for the info everyone, I'm going to switch to M1 as well due to those 2 benefits.