· Redeemed August 28, 2017
· Redeemed August 24, 2017
· Redeemed July 21, 2017
What You'll Get
- Conventional Oil Change, 1504 Bosley Road, Owensboro
- Synthetic Blend Oil Change, 1504 Bosley Road, Owensboro
- Full-Synthetic Oil Change, 1504 Bosley Road Owensboro
- Conventional Oil Change, 3330 Fairview Drive, Owensboro
- Synthetic Blend Oil Change, 3330 Fairview Drive, Owensboro
- Full-Synthetic Oil Change, 3330 Fairview Drive, Owensboro
- Conventional Oil Change, 3425 Frederica Street, Owensboro
- Synthetic Blend Oil Change, 3425 Frederica Street, Owensboro
- Full-Synthetic Oil Change, 3425 Frederica Street, Owensboro
Motor-Oil Viscosity: A Slippery Subject
The oil viscosity your car needs is usually determined by your car’s manufacturer, but is there ever a reason to switch? Groupon sought out the answer.
Whenever a vehicle is in motion, engine oil has a lot of work to do: reducing friction between moving parts, keeping the engine from overheating, preventing components from prematurely wearing down. But there are many things that can keep oil from staying on top of its workload, and that’s where viscosity comes into play. Factors such as varying starting and running temperatures, an aging car, or heavy loads on board can all affect how motor oil performs. Fortunately, auto manufacturers specify what viscosity level is best for their vehicles, so most drivers never have to spend much time pondering this subject. But for those who are interested or who have to make elevator conversation with a talking car, there are a few basic principles to consider.
Like most liquids, when oil is cooler it’s more viscous (that is, slower-flowing), and when it’s warmer it’s less viscous. Higher-viscosity oils are most appropriate for cars that operate at higher temperatures or carry heavier loads. Lower-viscosity oils work better at lower temperatures since they don’t need to be heated to flow, but they generally offer less protection against wear.
There was a time when people who live in four-season climates would use one oil with a higher viscosity during the warm months and another during the cold months, but multi-grade motor oils solve that problem by working efficiently in both conditions. When you see a viscosity grade on a bottle of multi-grade motor oil—say, 10W-30—there are two numbers to consider. The number preceding the W stands for “winter” or “woolen-underwear season,” which reflects how the oil flows when starting an engine on a cold day. The number after the hyphen is the viscosity at 210°F, the standard temperature of an operating engine. (On both sides of the hyphen, a higher number means a higher viscosity.) What makes this type of oil so flexible? It’s the polymers—particles that expand as the oil heats up and slow down the rate at which the oil thins as it gets hotter.
The Fine Print
Promotional value expires 90 days after purchase. Amount paid never expires. May be repurchased every 90 days. Limit 2 per person, may buy 1 additional as gift. Limit 1 per visit. Must use promotional value in 1 visit. Valid only for option purchased. No cash value. Not valid with any other offers. Valid for up to 5 quarts of Valvoline oil, filter, lube and maintenance check. Extra charges for premium oil filters and extra quarts.Valid only for the location purchased. Promo codes not valid on this offer. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services. Offer is not eligible for our promo codes or other discounts.