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Top Rated Merchant

Castrol Premium Lube Express is a top merchant due to its average rating of 4.5 stars or higher based on a minimum of 400 ratings.

Castrol Premium Lube Express

47369 Five Mile Road, Plymouth

Conventional, Synthetic-Blend, or Full Synthetic Oil Change at Castrol Premium Lube Express (Up to 54% Off)

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Highlights

Certified technician drains old oil and replaces it with new, keeping cars running at optimal performance

Customer Reviews

100% Verified Reviews
All reviews are from people who have redeemed deals with this merchant.
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A
Angela
15 ratings4 reviews
13 hours ago
These guys are AWESOME!!!! They are very thorough and provide great service! Free car wash and vacuum as well with your oil change. You can't beat it!
C
Caileen
1 ratings1 reviews
2 days ago
So so kind!! They go above and beyond!
길형
5 ratings1 reviews
September 7, 2020
It was a good deal in short. Workers are professional, but i need to extra pay for additional 1 quart and filter. Canister filter included in a Groupon deal didn't fit for my car. But I still think it's a good deal because the shop offered free car wash which usually costs $5. I will use this again.
K
KarenTOP REVIEWER
16 ratings11 reviews
August 31, 2020
I went there this morning before 9am. There was no wait. They were quick, and nice. Seemed to be checking everything. I plan on going back.
A
Ashraf
11 ratings3 reviews
August 22, 2020
unprofessional workers
J
Judy
5 ratings1 reviews
August 20, 2020
Fast and friendly service
S
Scott
6 ratings4 reviews
August 13, 2020
I usually give them a 5 but they did NOT WEAR MASKS when interacting at close distance with customers. Unacceptable. I spoke to them about it and they said they would in the future.
D
David
August 11, 2020
Good people
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What You'll Get

Choice of:

  • Conventional Oil Change
  • Synthetic-Blend Oil Change
  • Full Synthetic Oil Change

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 120 days after purchase. Amount paid never expires. Valid for up to 5 quarts of motor oil and spin-on oil filter. Additional fees apply for extra quarts of oil and cartridge oil filters. Effective only for 0W-20, 5W-20, 5W-30, and 10W-30 weight motor oil. Not valid with any other same service offers or promotions. Does not include sales tax. Limit 1 per person, may buy 1 additional as gift(s). May be repurchased every 120 days. Valid only for option purchased. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.

About Castrol Premium Lube Express