What's the story on high mileage Z's 2023+?

[thesilverbullet]

Good readings over all, Scott, mixture of track and street miles. What 5W30 are you using? It's working well. Viscosity did get thinned out a bit but still good protection. I wonder if 5W40 could help, not sure what temps you come across on your track days. I use 5W40 LiquiMoly on my Cayman S for our hot climes here, good success so far.

Looks like you need to bump up to 10-30

 

[thesilverbullet]

So technically speaking can we also use the dealer’s service department to order parts that are out of stock or discounted? I’m just curious

Yes, but off the street you pay a higher price at the dealership parts counter (unless they give you the family discount). they may have inventory locally, whereas the warehouse is stock out. But unlikely that a dealership will stock a rarely needed part like a a/t muffler. More likely that a dealer will just order rare parts from the warehouses when needed.

 

[trackratZ]

Looks like you need to bump up to 10-30

5W40 should work fine for our Zs on hotter track climes, but I refer to @zRedBaron he competes with Nissan challenge here.

 

[thesilverbullet]

5W40 should work fine for our Zs on hotter track climes, but I refer to @zRedBaron he competes with Nissan challenge here.

i would do 10-40 over the 5-40.

the further apart the two numbers the shear strength will not hold up under stress as good.

 

[ShearMe]

NissanUSA parts are hit or miss. The AT muffler, for example, has been sold out for some time.

AT has a different muffler? Shoot, who needs one?

 

[zRedBaron]

5W40 should work fine for our Zs on hotter track climes, but I refer to @zRedBaron he competes with Nissan challenge here.

I usually run Motul 8100 Power 5w-30, but if it's not available I'll get 5w-40 instead