Back to all

Proper Fluids for Your Vehicle

October 22, 2022



The automotive professionals at Tuffy St. Johns would like to give St. Johns drivers an update on some of the things happening in automotive fluids. You know, cars are becoming more sophisticated everyday - and fluids such as, oil, coolant and transmission fluid are becoming more specialized at about the same pace.

The Jacksonville do-it-yourselfer has to be pretty careful so that they do not actually harm their vehicle with the wrong type of fluid. That is why so many Florida car owners rely on the advice of their friendly Tuffy St. Johns service advisor to not only get the correct family of fluids, but to suggest the formulation that is best for their car and their driving habits.

Let's start with engine oil. Mandarin drivers who have been paying attention, will have noticed a number of new oil weights on the Florida scene in the last several years. Modern engines are built to much tighter tolerances and have very complicated valve trains. The oil must be thin enough to lubricate complicated parts when the engine is cold. The weight of an oil is expressed in terms like 20-W-50 or 5-W-30. The auto manufacturers recommend the weight of oil for each vehicle they make. The recommendation is based on engine design. Your St. Johns service center will know what weight your manufacturer recommends - and it's important to follow those recommendations. Your service advisor at Tuffy St. Johns can also offer suggestions for special formulations and can tell you all about conventional and synthetic oils.

Antifreeze,
or engine coolant, is another area that has become more complicated. For a long time, auto manufacturers only recommended a couple of different types of coolant. Now, several different formulations are needed because of the high-tech materials that auto manufacturers are using to build the cooling system. Using the wrong type of coolant can actually void your warranty, so you want to get that right.

Transmission fluid is becoming specialized as well. New transmission designs have particular requirements that require specific formulations. Recently, new, somewhat confusing, standards for brake fluid have also been released.

Not too long ago, there was a good chance that all of the vehicles at your St. Johns house would use many of the same fluids. However, as automotive technology advances, the array of basic automotive fluids you need will grow. And, some of the formulations will cost a little more. Fortunately, Tuffy St. Johns will continue to update their training to keep pace with technology so that you'll get the right fluids your car needs. It's all part of the commitment we make to your driving peace of mind.

More articles from Tuffy St. Johns

Steering You Right (Power Steering Fluid Service)

June 9, 2025

Its important for safe driving that two of the most important systems in your vehicle work right. One is the brakes. The other is the steering. Nearly all vehicles on the road have some sort of power steering that allows you to direct a very heavy machine with little effort. There are two ty... More

Your Vehicle's Hissy Fit (AC System)

June 2, 2025

When you hear hissing sounds coming from your vehicle, you might start thinking the worst. One type of hissing coming from around your air conditioner may be a normal sound, or it could be a sign of serious trouble. First - the normal sound. When you turn off your vehicle, the refrigerant goes... More

Don't Start with That (Bad Starter Motor)

May 25, 2025

We've all heard that expression, "That's a non starter." When it comes to your vehicle, that's not music to a driver's ears. That sickening sound when you start the ignition and instead of hearing the engine crank, you hear it slowly turn over and your dash lights go dim. There can be many reaso... More