some engines require dexos GM spec for proper engine protection. find out what you engine requires.I've been using the dealer for my oil changes thus far and want to go back to doing my own. Would you switch over to Mobile 1 at 42,000 miles or keep using the GM oil?
I've been using Mobil 1 for years now on my vehicles with no problems or complaints.I've been using the dealer for my oil changes thus far and want to go back to doing my own. Would you switch over to Mobile 1 at 42,000 miles or keep using the GM oil?
I use Mobil 1 and AC Delco oil filters on my vehicles. I've had success with filters like Purolator and Wix, but the AC Delco filters are the same price.some engines require dexos GM spec for proper engine protection. find out what you engine requires.
I would not worry about switching to a synthetic engine oil at this time. you may have had synthetic put in it at the dealership if you have a 2007 engine and newer.
The mobil 1 I use is now Dexos approved . I have found this to be very good with reduction of some of the engine noise on cold starts in very cold weather for the first 2 min.
I hope your not using regular dino oil as this oil is not good for these type truck engines even if it is an older one. make sure you use the proper viscosity. this should be 5-30wt. also get / use quality oil filters no fram filters. ac delco/mobil/napa gold/wix/purolator pure one .............
I used Mobile one from the first oil change on my 2002 when I bought it new. When I bought my 2003 with 130,000 on it I switched to mobile 1. I did notice it was losing oil somewhere. I did not see any leaks so it had to be burning it. I switched to mobile one high mileage and the oil level stopped dropping. When I totaled that truck and bought my 2005 with 130,000 on it I switched to Mobile 1 high mileage. It runs smoother than when I bought it, the oil level is at the same place when I drain it as it was when I filled it, and I have had no leaks develope. The only thing bad about the Mobile 1 high mileage is that it is not recommended for frequent towing or extended idling times.What do you guys recommend on a 99 Yukon with 156K? I switched to synthetic a year ago and noticed a need to add a quart after about 1500 miles. That doesn't seem right.