Onguard Engine Oil Inc.
YOUR OIL INDUSTRY REBELS
THIS IS ONGUARD ENGINE OIL COUNTRY

High-Quality American-Made Engine Lubricants
Universal Transmission Fluids
Universal Engine Coolant

VETERAN OWNED AMERICAN MADE

All Onguard Synthetic Oil is produced to the new API SPGF-6 specifications

NOW AVAILABLE AT OVER 100 AUTHORIZED DEALERS

VETS PROTECTING PETS with our bitterment addition to our
Universal Gold Coolant

PETS HATE THE TASTE

Onguard Engine Oil Inc.
Onguard Engine Oil Inc

REAL TESTIMONIALS

"So honored to say, we, here at All American Auto Service, Prescott Valley, AZ, were the first auto repair shop to install OnGuard Engine Oil, exclusively from the 1st Day we opened on April 3rd, 2017. Chuck & Carol run a first-class operation. Jeff has become more than just a representative of OnGuard Engine Oil Products, I’m also glad to call him a good friend after getting to know him these past few years... Read More

JERRY MOORE – ALL AMERICAN AUTO SERVICE -

"To whom it may concern,
Just wanted to give a 5 star review to Mr. Chuck Tanko and the team at OnGuard engine oil company… We have been using the company for almost a year and have had zero complaints from our customers about the product… Great product, great service!
Thank you so much Onguard team for everything you do for us, we do appreciate it! Read More

ATZAEL “ALEX” HERRERA –

"This is a great shop and is very well reviewed by their customers.
With the Onguard Oil, their tests showed an increase of 4 horsepower, from JUST an oil change, showing the superior performance you can expect from Onguard Engine Oil. Read More

DYNO TESTED & SHOWN TO INCREASE HORSEPOWER ! –

"We have used Onguard products for two years we do several fleet companies cars that drive a lot, since we have used Onguard Oil we always had good compliments about it like “what you use is great my car feels better ” I do recommend 100% I use it on my personal vehicles, Brad our sales representative is also on top of our inventory THANKS so much for all the great service. Also prices are unbeatable on the market 👍"

Read More

CESAR TRUJILLO –

"We LOVE On guard products! Brad is the best! Always so nice and helpful. Our customers have literally called a week after an oil change and asked if we have found a new magic juice for their car because they are running like new. We will NEVER go to any other product. THANK YOU ON GUARD! Read More

JESSE HURLEY –

"ON GUARD products are the best! ON GUARD’S service is the best by far! I am 58 years old and have been at this business since I was a young man. I myself have a 2004 Yukon that used to have the famous tick that GM’s have. After using ON GUARD oil I no longer have the ticking noise! I will NEVER use any other product and On guard is the best oil vendor I have had in 35 years. Read More

DAN GROMAN –

"We have used On Guard engine oil from the day we opened. How does it get any better than a Grade 5 oil priced the same or lower than the cheapest bulk crap out there with a Rep that comes in 2-3 times a month to check in? It doesn’t. Our rep Brad is amazing. The delivery is great and so is the product! Will only use On Guard. Read More

DAN SPAGNOLETTI –

"We have been using On Guard products for the last year. We love the consignment program! The rebate program brings the cost inline with other suppliers (of lesser quality fluids!). Brad has been great as our sales rep! He stops in regularly and keeps things moving. Thanks! Read More

ERIK LAAKSO –

"This stuff speaks for itself and does not require a review. I switched to onguard about a year ago and have been very happy with my choice to switch. Everyone has their own opinion about oil. I have been an ASE certified mechanic for over 30yrs I will use no other oil in any of my vehicles other than the Onguard Oil Read More

JAMES KOKRON –

"We have been using all OnGuard engine oil products for about 1 year and are very satisfied with the quality of the product. Our rep Brad is very pleasant and comes to check up on our products 2-3 times per month. We are extremely pleased with the service and love the rebate program. OnGuard is the best and we will not switch products. Read More

RICK PROCTOR –

"Flat out this is just AMAZING oil. I have tried every type of oil brand in both regular and synthetic oil along with various oil additives and the tick never goes away. I started using this oil a few months ago and I am amazed that the tick has gone away completely. Keep in mind, I am only using Onguard Synthetic Oil with no additives. You really should try this oil. You will not be disappointed. Read More

VERN C. –

"I currently use the Onguard 15 W 40 diesel oil in my Dodge Ram Cummins and I can HONESTLY say my truck runs smoother, gets better gas mileage, and extends my drain intervals. In fact, I like this oil so much I recently purchased a 55-gallon drum of it! Great oil, will use nothing else. Read More

BRUCE MANZKE –

Featured Products

Synthetic Oil vs. Conventional Oil

BENEFITS

Conventional oil, while being the right choice for some, however, cannot stand up to synthetic oil when it comes to longevity and ability to handle extreme temperatures without breaking down. Onguard’s Full Synthetic oil uses a specific controlled process:

“Our products are refined to the point of having precisely uniform size oil molecules processed at microscopic levels.”

This gives Onguard’s Full Synthetic based lubricants exceptional consistencies at high and low engine temperatures. The final composition is cleaner, which offers Onguard’s products lower volatility, i.e., will not vaporize quickly. Onguard’s Synthetic based oil can last up to three times longer than any traditional conventional oil.

Plus, this oil produces notably less resistance to engine rotation, providing more horsepower while using less fuel, which gives vehicles better fuel efficiency!

ONGUARD IS LISTENING – We also make high-grade Synthetic Blend Oils. We scientifically formulate our engine oils to produce a better motor oil at even better prices for our customers. Onguard’s Synthetic Blend engine oils are of very high quality, synthetic-based, and premium grade conventional oils that are precisely mixed together.

All Onguard engine oils are rated at the top of the ILSAC Specification Indexes, which sets standards for classifying engine lubricants. An engine oil’s highest rating possible was API SN+GF-5 and recently changed to the new SPGF-6 on May 1st, 2020 – which ALL Onguard’s Engine Oil Products produced now meet or exceed the new specifications!

Premium Quality FORMULATION IS KEY

Onguard lubricants are formulated and designed to include synthetic oil components that provide a more consistent viscosity. Our modern-day formulas provide benefits to today’s high-tech engines, and “classic” engines as well.

Onguard state-of-the-art synthetic lubricating agents, exceedingly better for engines than conventional oils, reduce bearing loads, oil drag, oil contamination, and unnecessary power loss.

Additionally, each formulation can last up to three times longer than conventional motor oils and produce less resistance in the engine, producing more horsepower and overall fuel efficiency.

OG Bottles being filled

"EVERY OUNCE OF FUEL WILL TAKE YOU FURTHER
WITH ONGUARD ON BOARD"