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.

Does your GM Vehicle call for SAE 5w-20? What you should know.

By Petroleum Service Company on Mar 19 2024

Did you know that General Motors recommends dexos1™ 0W-20 viscosity engine oil for applications originally calling for SAE 5W-20? That’s right! Although some engines initially did require (and clearly posted on the engine oil fill cap) that a SAE 5W-20 be used, current testing by GM Powertrain Engineering Department has validated and approved the use of 0W-20 dexos1 as an acceptable substitute and optional top-off and service fill for these vehicles.

Source: GM Service Bulletin #13-00-90-002A

Other things you might want to know about dexos1™ engine oil:

So far 254 SAE 5W-30 products are GM licensed, 186 SAE 0W-20 are licensed and only about 25 SAE 5W-20 oils have been licensed as dexos1™.
SAE 0W-20 viscosity is used to maximize its contribution to fuel economy improvement.
Formulated to provide added protection against low speed pre-ignition, LSPI*, which is critical in GM’s small displacement turbocharged engines.
New additive chemistry to protect turbocharger from harmful deposits.
Only oils displaying the dexos1™ trademark and a registered trademark logo on the front label meet GM stringent oil requirements.
Look for the 11 digit GM dexos® license number on the back label for an authorized/approved GM lubricant.

dexos1™ Engine Oil Trademark and Registered Trademark Logos:

Gulf Lubricants dexos1™ Engine Oils

Shop GulfTEC dexos1™ 5W-30

Shop GulfTEC dexos1™ 0W-20

GulfTEC® Full Synthetic dexos1™ Motor Oil exceeds API SP / ILSAC GF-6 requirements for new cars under warranty. Highly recommended for use in gasoline-fueled and flex-fuel passenger cars, light trucks and sport utility vehicles. Fully backward-compatible making it an excellent choice for previous model year GM vehicles.

Low Speed Pre-Ignition (LSPI)* most commonly occurs in smaller displacement engines developed to meet higher fuel economy standards. It is random premature ignition which often occurs under low-speed, high-torque conditions in turbocharged gasoline direct-injected (TGDI) engines and can be more destructive than typical engine knock.

At Petroleum Service Company, we pride ourselves on being your one-stop destination for all your Gulf Lubricants needs.

With a wide range of products available in various sizes, and a seamless online shopping experience makes purchasing your Gulf products effortless and convenient. Have questions? Our friendly customer service team is always here to assist you, providing expert guidance and support whenever you need it.

1-855-899-7467
buy@petroleumservicecompany.com