All reviews are from people who have redeemed deals with this merchant.
Reviewed May 13, 2015
Reviewed September 2, 2014
What You'll Get
Choose from Four Options
- $25 for one non-Harley motorcycle standard oil change with filter ($50 value)
- $45 for two non-Harley motorcycle standard oil changes with filters ($100 value)
- $55 for Harley bike standard oil change with filter ($110 value)
- $99 for two Harley bike standard oil changes with filters ($220 value)
Techs will also check drive chains or sprockets, for non-Harley bikes, if present. For Harley bikes, they will check the belt in addition to the brakes and tires.
Octane Rating: Grace Under Pressure
What’s the difference between regular and premium gas? Check out Groupon’s guide to the cryptic numbers on the gas pump.
When deciding between regular and premium gasoline, the only thing that matters is the number on the pump. Not the price, though—the octane rating. For each grade of gasoline, a yellow label sports a bold number—usually 87, 89, or 93—that corresponds to the fuel’s concentration of octane. The term octane stems from the refining process. On a molecular level, crude oil can be broken down into chains of different lengths, such as methane, which has one carbon atom, or propane, which has three. Blending different levels of these fuels changes the way the gas reacts to compression. During the engine’s compression stroke, a cylinder of air and gas compresses into a much smaller volume, after which the spark plug ignites the fuel. If the gas is compressed too much, however, it can sometimes trigger an ignition before the spark plug intends. Since octane is highly resistant to compression, the octane rating represents how much compression the fuel can handle before it ignites on its own. An 87 rating, for example, means that the gas contains 87% octane and 13% heptane—a more volatile chain.
Not every engine can handle the same octane rating, and choosing the wrong fuel can sometimes do unnecessary damage. High-performance engines, in particular, have higher compression ratios in order to generate more horsepower. High-performance engines are typically found in luxury vehicles as opposed to everyday cars, however, so unless your owner’s manual demands premium gasoline, don’t bother filling up on more expensive fuels. The regular octane rating is more than enough to keep engines from dying of thirst.
The Fine Print
Promotional value expires 180 days after purchase. Amount paid never expires. Appointment required, 48 hour advance notice required. Limit 1 per person, limit 2 as gift. Limit 1 per visit. Synthetic oil can be substituted for non-Harley bikes for an additional fee of $40 and for Harley bikes an extra fee of $30. Valid only for option purchased. All goods or services must be used by the same person. Must redeem first oil change within 6 months from the date of purchase. The second oil change must be redeemed within 12 months from the date of purchase. Not valid for clients active within the past 12 month(s). Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.