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ZForce · 03-21-2010, 03:39 PM

Good UOA's. Any reason for changing out the oil before the recomended oil change interval (OCI) at 3750 mi (yours was at 3K mi)? Lower OCI will normally give better numbers, but I do not think 750 mi would have made a big difference. The silicon has improved but still on the high side (dirt in the air filter) you may want to keep on an eye on the air filter and clean it on a more frequent basis or replace it with a better paper filter.

I have to say this is a very good UOA with only the viscosity breaking down early. Keep paying the extra $10 for the TBN test, its worth every penny.

I wish my UOA's were this good.

03-21-2010, 03:39 PM	#23 (permalink)
ZForce A True Z Fanatic Join Date: Jul 2009 Location: Roseville, CA Posts: 2,359 Drives: 09 370Z Tour + Sport Rep Power: 21	Good UOA's. Any reason for changing out the oil before the recomended oil change interval (OCI) at 3750 mi (yours was at 3K mi)? Lower OCI will normally give better numbers, but I do not think 750 mi would have made a big difference. The silicon has improved but still on the high side (dirt in the air filter) you may want to keep on an eye on the air filter and clean it on a more frequent basis or replace it with a better paper filter. I have to say this is a very good UOA with only the viscosity breaking down early. Keep paying the extra $10 for the TBN test, its worth every penny. I wish my UOA's were this good.