So I’ve got 1,500 miles on my new short block (total is 8,500 miles on the car) and the damn thing is burning oil once again (1 full quart after 1,500 miles).

Just got the call from the dealer and they’ve put 10-40 oil in my car saying that’s what Infiniti is recommending now to address the infamous oil burning issue… WTF???

’06 G35 6MT

 

running a full synthetic slows it down alot i would also try a 15-40 thats what i run in my car and i burn about 1/3 quart every oil change

 

whatare you supposed to put when you change your oil

 

weird. i think i've been using 10-30... i thought 10-40 is also in the recommended range?

 

thing is..they shouldnt have too

 

...my point exactly

 

ya that is garbage

 

Unless it's synthetic, 10W-40 is generally inferior to 10W-30, which is one of the reasons it's seldom recommended anymore for use in new cars. Manufacturers have to add more VI (viscosity index) improvers to the refined product to achieve such a broad viscosity range, and because of that the oil doesn't stand up as well over time. There are a lot of non-synthetic 15W-40 oils on the market that are intended primarily for diesel engines but useable in gasoline engines. As long as temperatures don't get too cold, they're a much better choice than just about any 10W-40. Just my 2-cents.

In any event, that's a pretty lame way to address an oil consumption problem. Apparently Nissan hasn't addressed the underlying cause of increased oil consumption in the revup engines. I have to wonder if the VQ37VHR will have the same problem. Its slightly longer stroke (increased by 4.6 mm over the VQ35) will cause a corresponding increase in piston speeds for any given RPM and, as a general rule, faster piston speeds equate to increased rates of cylinder and ring wear. As a percentage increase the change from 81.4 to 86 is very small so it's not likely to make much of a difference, but it's something to keep in mind.

 

unless you are running a high compression high hp output motor you are just choking your motor with that oil

 

I thought 10W-40 was too thick... doesnt flow well leading to more friction and damage... isnt 0W-30 the best oil to use in these cars?

 

Bingo! You are correct. As a rule, I would stay away from all multigrade 30 weight oils as they are much too thin. A good synthetic 0W-30 is the way to go up north. I live in Florida and use 0W-40 because of the constant heat. The 0 is for start ups and is very thin. The 40 is for normal operating.temperatures and is much thicker. The multigrade 30 weights 5w/30, 10w/30, 15w/30 are all way to thin oils and I find are quite inferior in general to the 0W/30 synthetic. Castrol 0w/30 is an extremely thick oil.

 

Just follow what the dealer wants to do for now. That way they have no argument when they have to replace it again, which it sounds like they are going to have to do.

 

Probably the best advice and document *everything* and keep it in a safe place.

Can't believe you are going through this twice and can't believe all these oil consumption probs.

Why doesn't inifinit just correct the problems instead of putting the same crap back in like with the 03-04 brakes. Had mine done three times, rotars and pads all around.

 

have them replace the long block, and be done with it

 

It didn't hit me until I read your post, but my oil consumption started when I switched from 10W 30 to 5W 30. I live in a hot southern state and had read that you only need 5W 30 for the cold and it can be too thin in the heat, so from the day I got my G I was using 10W 30 - until I let a friend talk me into using 5W 30 since that is what Infiniti calls for.

I can't believe you are dealing with the same issue on a new motor. Good Luck.