soonerta
2/6/2008 9:19:51 AM
I think that is a little too long. I change my synthetic oil about every 7000 - 7500 miles. If it was not synthetic I would lower that to 5000. It all depends on the your driving conditions like how many miles you drive and the amount of heat or sand that is in your area.
Hawaiian Hummah
2/6/2008 9:59:48 AM
the first scheduled change is @ 3500 miles
rhill20
2/6/2008 1:26:45 PM
Agreed, first change was at 3500mi and after putting synthetic I go about 7000mi between changes
3hummers
2/6/2008 6:15:10 PM
Yep. 3500 max on a first change.
hummerabia
2/6/2008 8:45:13 PM
Not sure what part of the world you are in TREX, but over here in the Arabian Gulf the first service is 1000KM and every 10,000KM there after. However driving conditions over here such as heat, humidity, dust and offroad use shortens the service interval to 6000KM for me.
I allways use Mobil 1 synthetic just as a personal preference.
T REX
2/7/2008 4:06:53 AM
Thanks All!!
I live in South Africa where it gets pretty hot in summer and below freezing in Winter so not sure why GMSA says that we should only change the first OIL change at 20000km!
I will change it myself soon at least then I have the peice of mind that my Engine in being better looked after than all the other Hummers here that will wait for there 20000km Fisrt Service Interval
