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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 44% Off)

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Extra 25% off, up to $50
Promo Code SAVE. Ends 6/29.
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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. Review requests are sent by email to customers who purchased the deal.
Filter Aspect List
S
Scott
13 ratings10 reviews
Rating of 5 out of 5 stars
May 26, 2022
These guys are always super nice. They'll tell you about other filters and things you might need but they won't over sell you. The free car wash is a bonus, too. I've been going to them for years now.
P
Patrick
9 ratings8 reviews
Rating of 5 out of 5 stars
May 24, 2022
I keep going back due to the consistent above-par level of service. Using a Groupon only sweetens the deal.
S
Sam
19 ratings4 reviews
Rating of 5 out of 5 stars
May 16, 2022
Very professional and was done quickly.
S
Stephen
6 ratings2 reviews
Rating of 5 out of 5 stars
May 4, 2022
Staff is wonderful. No pressure to up-sale you on anything you don’t need.
D
Deborah
100 ratings21 reviews
Rating of 5 out of 5 stars
April 12, 2022
Had a great experience. Very knowledgeable and friendly.
R
Robert
9 ratings4 reviews
Rating of 5 out of 5 stars
March 26, 2022
Okay all went well
J
Jennifer
107 ratings63 reviews
Rating of 5 out of 5 stars
March 23, 2022
I agree with many others comments that the 2 gentlemen were very friendly and didn't try to sell me anything additional. It was super quick which is also wonderful. Can't go wrong with this one!
M
Muhanad
1 ratings1 reviews
Rating of 5 out of 5 stars
March 21, 2022
Great service
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About This Deal

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.

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 3 per person. May be repurchased every 365 days. Valid only for option purchased. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services. Learn about Strike-Through Pricing and Savings

About Castrol Premium Lube Express