2006 Xterra Off-Road
Join Date: Sep 2013
Location: British Columbia wildfire country
Mostly...... Mobil 1 Extended Performance 5W30 with Mobil-1 Extended Performance filter.
Recently..... Pennzoil Platinum 5W30 with a Fram Ultra Synthetic oil filter. I might try Pennzoil Ultra Platinum at some point.
I change the oil about twice a year (roughly at 11k to 12k kilometers or every 7K miles).
The key to using longer-life synthetic oil is a high quality, longer-lasting filter.
On the old 1993 pathfinder, I started out with high mileage Mobil 1 and then switched to Mobil 1 5W30 and later to extended performance 5W30.
That WD-21 3.0 litre engine pathfinder never leaked a drop of oil unless it was overfilled at Mr. Lube or on one occasion, one of the valve covers became lose which was quickly resolved.
This thread reminds me that once upon a time in southwestern British Columbia (late 1990s), most mechanics dismissed synthetic oil as not cost-effective or as a marketing ploy.
Man has that has changed. Now everybody uses/recommends synthetic oil.
Night armour Xterra 2006 Off-Road, after-market Bilstein shocks, 5th rear leaf spring, Michelin LTX M/S^2 4-season tires, Pennzoil Platinum 5W30 motor oil, JVC GPS/Receiver, otherwise stock. 205,000 km/127,000 miles. Handles steep loose rock very well.