Can I switch between synthetic and conventional oil?

Yes, it’s possible to switch between them, although it’s best to follow your vehicle’s manufacturer recommendations. If your car is older, consult a mechanic before making a switch.

Is synthetic oil worth the extra cost?

In most cases, yes—especially if you want longer intervals between changes and better protection. For frequent drivers or those in extreme climates, the investment often pays off.

How often should I change synthetic oil?

Many full synthetic oils are rated for up to 10,000 miles between changes, but always check your vehicle’s maintenance guide for specifics.

Newsletter | February 2023 - Petroleum Service Company

NEW BRAND ALERT

We are excited to announce that we have another new brand on the PSC platform, Gulf Lubricants!

Born in 1901 and engineered with an iconic legacy to surpass todays tough OEM (Original Equipment Manufacturer) standards, Gulf produces exceptional lubricants. Whether it's for your family's car, or the heaviest of commercial machinery-you can be sure that when you choose Gulf Lubricants, you choose unmatched protection.

Shop Gulf Lubricants

Category Spotlight: Sales and Promotions

Who doesn't love a good deal?! Luckily, PSC is constantly striving to give you the best deal possible. Through our Sales and Promotions category we lay out all of the most up to date offers.
Watch Joe as he explains some of the sale categories so you can find the best products for the best price!

Shop Our Sales and Clearance Category

Shell Rotella T5 15W-50 Synthetic Blend Technology is suitable for a wide range of heavy duty engine applications. With a range of specifications and approvals from many leading engine makers, it is an excellent choice for on-highway fleets, construction, agriculture, and diesel pick-up trucks, including high-power vehicles where resistance to increased heat and stress is required.

Shell Rotella T5 15W-40 also:
Provides all the protection you expect from an SAE 15W-40 but in a synthetic blend heavy duty engine oil.

Goes beyond CK-4 wear limits, delivering an average of 37% better than the maximum wear requirements.

Demonstrates 55% better deposit control than CK-4 15W-40 oil as demonstrated in multiple deposit control tests.

Improves oil breakdown resisitance for long oil life with improved high temperature oxidation protection.

Shop Shell Rotella T5

What Is Rust (And How Can You Stop Its Reign of Terror)?

From automotive undercarriages to old boats, chains, trains, and wheelbarrows, rust is pervasive. And it's desctructive. But what, exactly, is it? If you haven't picked...

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How Does Winter Affect Your Car's Tires?

With winter comes all sorts of good stuff: sledding, snowball fights, cozy fires, and skiing are just a few perks. But winter brings its fair share of problems, too: icy roads...

Learn More

Don't Just Take Our Word For It...

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