You can claim the Head of Household filing status on your tax return if you pass the support test, the residency test for a qualifying person, and are unmarried at the end of the year. There are also special rules that relate to separated parents and married couples who live apart from each other.
Motor oil. Motorcraft also sells motor oil for automotive use. As of the late 2000s most of their oil is a synthetic blend or fully synthetic. Several weights are available from the 5W-20 all the way to a 15W-40 for diesel engines.
As long as it's made for use in atv's and motorcycles with a wet clutch system your good to go, just change it often, I looked it up for you today, and Valvoline only offer's motorcycle/atv made oil in 10w40 and 20w50,,here is a pic of the bottle also.