If you use a synthetic oil, such as Mobil 1, you are advised not to use any engine treatments or additives. Mobil claims that. The use of an engine oil additive is not recommended, either by Mobil or by virtually any vehicle manufacturer.
Freehold, New York. Freehold is a hamlet in the town of Greenville in Greene County, New York, United States. It has the ZIP Code 12431, and its own fire district. The hamlet is centered on the junction of New York State Route 32 and Greene County Route 67. There are several buildings there, such as the firehouse and a general store.
The longest hiking trail in Nassau County, the Nassau-Suffolk Greenbelt Trail, begins at Merrick Road and Ocean Avenue and continues through the length of the preserve, ending at Cold Spring Harbor. Freshwater fishing is available in several of the lakes and streams (license required). In December 2006, the Peter J. Schmitt Massapequa Preserve was named Best Nature Preserve of Long Island  by Long Island Press, the weekly newspaper.