All name brand synthetic oils are pretty much the same. Use any name brand you wish in the correct weight.
5w30 synthetic
Mobil 1 full Synthetic or Dealer Kendall Full Synthetic
A Hummer Limousine when new, runs $100,000.00 to $125,000.00. You can get a used Hummer Limousine for anywhere from $40,000.00 to $100,000.00
5W-30. Remember, do not use synthetic oil if your vehicle is above 75,000 miles and has not had synthetic oil used before.
5w20 it can be synthetic or conventional.
SAE 10w30 Synthetic oil.
A used Hummer may or may not come with a warranty; that depends on the dealership that is selling it. Person-to-person sales of a vehicle can void or nullify the warranty. If buying directly from a dealership on a Hummer that was traded in, there should be at least a thirty day warranty.
Most used Hummer car dealers have very informative websites to look through to find a Hummer in good running condition. They have great information and pictures of the Hummers on their sites along with very reasonable prices to fit most budgets.
Someone could find a deal on a Hummer by looking on listings for used cars online or looking on craigslist. Someone could also go to a local dealer to look for deals on a Hummer.
SAE 5w20 Conventional or Synthetic any major brand.
SAE 10w30 full synthetic any major brand.
The 2006 F-150 owners manual shows ( SAE 5 W - 20 ) You can use synthetic or synthetic blend if you wish as long as it has the API certification mark ( certified for gasoline engines ) and meets Ford specification WSS - M2C930 - A ( for the 5 W - 20 engine oil )