Oil Analysis

KYDeepwater · 03-30-2007, 05:57 AM

52,500 mile service I did included, changing oils in front and rear diff., engine, transfer case. Did a drain and fill of transmission, four new quarts of J fluid. I took all of these samples and had oil analysis completed. The data is attached. Most everything looks really good. Surprised how well the front diff. oil was after 52,500 miles on the original Nissan oil. The rear diff. has the PML cover and it is in good shape. Transmission had not been touched until now. The transfer case I have some concerns with, there are soem high wear metals and a lot of mung was on the drain plug. So if you use the 4x4 much I would look into changing it. I used Royal Purple Max ATF in the transfer case. Also, changed to Royal Purple in the front and rear diff. The Supertech 75W140 from Wal-Mart went up to $9.99 a quart, and I got the Royal Purple for $8.50.

**konigfritz** · 03-30-2007, 06:40 AM

good info there. Thanks! We Haven't had any of these posted in a while.

INDYTITAN · 04-02-2007, 08:43 PM

i just went to RP this oil change and have an increase of 2 mpg after 500miles with the new RP 10 w 30 in the engine I've been curious about the rear diff and front diff fluids and what weight to use in each

xworrallx · 04-02-2007, 09:00 PM

Sounds good! Thanks for the info! When I purchase my Titan the first thing I plan to do is a full fluid change to all synthetic oils. Good idea?

coachditka · 04-05-2008, 08:32 AM

Just got my Blackstone report on Mobil 1 5w30 truck/suv synthetic. I have been running this oil every 5k for the last 20k miles. This report says 4200, but it was closer to 5000. I drive a lot of stop and go in Houston, so I change every 5k. I also use the M1-110 Mobil One filter.

Justintoxicated · 04-08-2008, 02:06 PM

Nice Mobile one report. As for running purple in your diff you might want to check my post above. I noticed my first transfer case change looked really black and burn with only 25k on it. I filled it with mobile1 Synthetic ATF this last time and changed it at 25k again. This time I could still see alot of color in the oil.Although it was a bit dark, it was far from black like the previous change and there was alot less crap on the magnet compared to the oridional break in oil.

I'd suggest changing your transfer case before Nissan Recommends, at least the first time.