What’s the best oil for 7.3 Powerstroke? We know the right answer.
If you’re already here, you have a concrete idea about 7.3L Powerstroke engines.
You’d invariably need to use highly pressurized oil for the HEUI fuel injection system of the 7.3L Powerstroke. So, going for heavy-duty diesel engine oil with the appropriate viscosity is indispensable if you want to keep the 7.3 Powerstroke in perfect working order.
Choosing a premium quality of synthetic oil will work wonders for the 7.3L diesel engine, keeping the motor’s longevity intact. In addition, the intense shear force created by the HEUI injectors (over 25,000 psi) is much better tolerated by synthetic oils than conventional oils, making the former highly resistant to breakdowns.
Hence, synthetic motor oils offer enhanced protection to diesel engines in comparison to traditional ones. So, what is the best oil for 7.3 Powerstroke?
The 4 Best Oils for 7.3 PowerStroke
| Image | Model | Price |
|---|---|---|
| Valvoline 15W-40 (Top Pick) | Check Price |
 | Liqui Moly 2041 Premium 5W-40 | Check Price |
 | Shell Rotella T6 | Check Price |
 | Mobil 1 44986 5W-40 | Check Price |
Valvoline 15W-40 Premium Blue Diesel Engine Oil (Editor’s Choice)
Cummins Inc exclusively recommends this oil for all makes of diesel engines used in heavy-duty trucks.
The rating (weight) of this ‘premium blue diesel engine oil’ is SAE 15W-40. That implies that the lubricant will perform optimally even when the immediate environment’s temperature plummets or peaks to extreme levels.
The lubricant’s robust shear stability ensures heightened resistance to viscosity fluctuations caused by mechanical wear and tear or stress. That guarantees the lasting performance of the engine.
The advanced additives included in the oil also guarantee protection against damages from deposits of soot, dirt, and other kinds of pollutants or contaminants.
Liqui Moly 2041 Premium 5W-40 Synthetic Motor Oil
The Liqui Moly 2041 Premium Synthetic Motor Oil is another top-notch engine oil brand with a rating of 5W-40. The rating implies that the oil will continue to lubricate your truck or trailer’s motor even when it’s very hot or cold outside instead of suffering a breakdown.
It is a premium synthetic motor oil. It not only helps in maintaining the longevity of the vehicle’s engine by keeping it fully lubricated. It also lasts long, thus enabling you to save quite a substantial sum of money.
This oil is compatible with gas and diesel engines and their variants, including intercooling, supercharging, turbocharging, variable cam, and so on.
In our opinion, this is the best oil for 7.3 Powerstroke
Shell Rotella T6 Full Synthetic Heavy Duty Engine Diesel Oil 5W-40
The Shell Rotella T6 is almost a guarantee for keeping your 7.3L Powerstroke engine well lubricated even when the temperature subsides to -30˚F.
The Shell Rotella T6 has been prepared using the minimal phosphorus, sulfur, and ash elements in line with the current vehicle-emission norms. As a result, the lubricant can hold its own even when the lubricated surface tends to heat up intensely and ensure extended engine life.
The superior low ash formula helps check blockage of post-exhaust devices, thus boosting the engine’s fuel efficiency. In addition, the state-of-the-art dispersant additives, together with base oils, safeguard the engine against soot, grime, and other pollutants.
The Rotella T6 furnishes better protection against wear and tear than the earlier generation of API CJ-4 engine oils.
Mobil 1 44986 5W-40 Turbo Diesel Truck Synthetic Motor Oil
If you’re looking for a hardwearing oil for keeping your truck’s Powerstroke diesel engine in good humor, then go for the 44896 5W-40.
The lubricant comes in perfectly handy for checking the deposition of sludge. That is prevalent when you’re driving in freezing temperatures. At the same time, the oil retains its viscosity level even when it has to deal with varnishes and paints’ high temperatures.
The viscosity range extending from 5W to SAE 40 means your engine keeps on running smoothly, come rain or shine.
The engine of your truck is protected when performing at temperatures of -53˚F to 400˚F.
How to Pick the Best Oil for 7.3 Powerstroke Engine
Most heavy-vehicle drivers, including even the experienced ones, don’t know the exact mileage point when they should change engine oil.
Alternatively, the right proportion of truckers is also unsure about the lubricant type used in 7.3L diesel engines. Using appropriate oil is crucial for ensuring that the engine operates smoothly throughout its lifecycle.
Since the 7.3L Powerstroke takes advantage of a high-pressure oil pump to run the fuel injectors, using an oil-containing anti-foaming agent is necessary. Unfortunately, the anti-foaming agent prevents the oil from getting aerated. That may lead to substandard fuel injection spray patterns and ultimately less power.
You should refill the engine with high-performance oil every 4000-5000 miles.
Take the following aspects into consideration while choosing the best oil for 7.3L Powerstroke:
- Pick an oil containing the suitable additives, including, of course, the anti-foaming agents. This is useful if you stay in a region where the climate remains tolerable. Go for the 15W40. If the temperature usually plummets to 20˚F and below in your clime, buy 10W30. Opt for 5W-30 if the average temperature hovers around -10˚F.
- Changing the oil at correct intervals is what matters the most. You should change the oil in your 7.3 Powerstroke engine after you’ve driven 4000 to 5000 miles. It would help if you made it a habit to refill the engine with the lubricant, regardless of the brand you’re using.
Wrapping up, we need to make a hard choice. What’s the best oil for 7.3 Powerstroke? In our opinion, it’s oil from Valvoline. It’s not expensive and meets all criteria mentioned above.