1990 300ZX NA Mobile 1 0W-40

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My car is also a Nissan but mine a 4cyl. It thins oil, too, that's why I asked once about going up to 0w-40 instead of the specified 5w-30. I think Blackstone may agree with me.
 
Originally Posted By: Artem
How long was this oil in use? Seems like low mileage for a early 90s car.


Oil was used for 3,500 miles. Car had 90k original miles at end of OCI.
 
Originally Posted By: 28oz
I'm not sure. That confused me a little as well. Typo?


Blackstone needs to proof-read their messages. I proof-read my messages here at BITOG and I'm not even getting paid for it!
 
These cars definitely beat up the oil. Mine basically turned Royal Purple 20W50 into a 10W40 within 3200 miles,but the uoa was perfect! I know absolutely nothing about Mobil 1 0W40,but the viscosity on your uoa report is the same weight as a 10W30. I thing Castrol Edge 10W30 is somewhere between 10.5-11 @100C.
 
Here's my latest uoa, GTX 20W50. It turned this one into a 10W40 as well. I think this oil starts out close to 20 @100C:

 
"Mark McCracken" huh ? Very clever.
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Originally Posted By: Merkava_4
"Mark McCracken" huh ? Very clever.
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Haha M-Dawggy Dawgg Mak Daddy Mark
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Charles, did you ever get your Pennzoil Platinum 10W-30 tested ?

I was wondering how it compares to GTX 20W-50 in your 300ZX.
 
Originally Posted By: Merkava_4
That GTX 20W-50 and 300ZX were made for each other. Fantastic report.
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I know !!!
The GTX returned 1 ppm iron in 3000 miles.

Any less and it would be in negative numbers and start depositing metal.
 
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