For off-road enthusiasts, the Chevrolet Tahoe has been a great vehicle to buy. It was introduced in the year 1992 and is still a part of the Chevrolet line-up of SUVs. We will take a closer look at how fuel-efficient the Tahoe is and what fuel types are recommended for use with the Chevrolet Tahoe as per the owner’s manuals for Tahoe’s generations. Show
All the engine options available in Chevy Tahoe’s line-up should have 87 or higher rated octane except for the 6.2L V8 that has the premium recommended. Under heavy load, it is advised to run mid-grade 91 or premium 93 instead. For diesel engines, Ultra-Low Sulfur Diesel, no more than 15ppm is required. TOP TIER Detergent Gasoline/Diesel is a recommended additive. This is a significantly shortened version of how good the Tahoe was in terms of fuel efficiency. We will take a step further and give you a generation-to-generation overview of how things were when it came to the fuel economy of Chevrolet Tahoe. We will also take into account non-conventional fuel types for their suitability with Chevrolet Tahoe. Want to save money on gasoline? earn up to $0.25/gallon every time you fill up? GetUpside is a free-to-use cashback app for US gas stations. Use coupon code “THEDRIVERADVISER25” and earn an additional $0.25/gallon the first time! Click here to download the app for Android or iOS. Fuel Requirements Based On Engine Type2021 – PresentThe current American-made Tahoe is offered with three types of engines. There is a base model 5.3 liter ECOTEC3 V8 engine that shells out a healthy 355 horsepower. The upper tier gets the 6.2-liter ECOTEC3 V8 producing 420 horsepower. And finally, the Duramax Diesel engine, which, with its 3.0-liter turbocharged setup, puts out 277 horsepower. Chevrolet Tahoe’s owner manual states that a minimum of 87-grade octane gasoline should be used for the gasoline engines. It further states that for the 6.2-liter higher output V8 ECOTEC3 the best option is to go for 93-grade octane gasoline. This is an excellent alternative to the 87-grade octane to enhance engine performance and longevity. For the Duramax TurboDiesel variant, the 2-D diesel is suggested for regions where temperatures seldom drop below 0 degrees Fahrenheit. For areas with climates frequently dipping below 0 degrees Fahrenheit, 1-D diesel fuel is indicated by Chevrolet.
Also read: How Many Miles Can A Chevy Tahoe Last? (Answered) 2015 – 2021From the year 2015 till 2021, the 4th generation of Chevrolet Tahoe was in production. Chevrolet had two gasoline engines on offer for the 4th generation. A 5.3 liter ECOTEC3 V8 engine and the 6.2 liter ECOTEC3 V8 engine under the hood. Chevrolet’s minimum suggested fuel type in the Chevrolet Tahoe owner’s manual is 87-grade octane gasoline for the 5.3-liter engine. For the 6.2-liter higher output engine, although the minimum is 87-grade octane, Chevrolet suggests that it would be better to use 93 instead of 87-grade octane. The results of using 93-grade octane are better performance and longer engine life. The 4th generation was not introduced with any diesel variant.
2007 – 2014The 3rd generation of Chevrolet Tahoe had four different gasoline engines. The base model was a Vortec 4.8 liter V8. Then there was the Vortec 5.3 liter engine producing 326 horsepower. The hybrid 6.0 liter Vortec 6000 engine produced 332 horsepower on gasoline alone. And finally, the 6.2 liter Vortec 6200 V8 makes 395 horsepower. Once again, no diesel engine was offered for 2007 till 2014 3rd generation of the Chevrolet Tahoe line of SUVs. The suggested fuel type for the gasoline engines was a minimum of 87-grade octane gasoline or higher. Higher would be better since higher grade octanes can elongate the engine’s life and enhance its performance.
2000 – 2006For the 2nd generation of Chevrolet Tahoe, the engine line-up was relatively simple. There were only two variants of the gasoline engines. One was the base model 4.8 liter V8 that produces up to 285 horsepower. The second option was the 5.3 liter V8 that was capable of producing up to 295 horsepower. The 4.8 liter V8, as per Chevrolet’s recommendation, is designed to use a minimum of 87-grade octane gasoline or higher. For the 5.3-liter V8, the recommendation is once again to use at least 87-grade octane or higher. From experience, one can tell that using higher grade octane is better since it enhances engine performance and improves engine life.
Also read: The Exact Bolt Pattern Of A Chevy Tahoe What Types Of Gasoline Can And Can’t Be Used?Today we have various types of gasoline that can be used for our vehicles. But does Chevrolet suggest those or otherwise? We will try to skim through the coming paragraphs to answer this question, so sit tight. Reformulated GasolineReformulated Gasoline or RFG is formulated for greener and cleaner burning. Compared to regular gasoline, reformulated gasoline causes lesser smog, and the emissions contain pollutants that are less toxic than regular gasoline. RFG is used in states where they have adverse air quality. Chevrolet recommends that if available, reformulated gasoline can be used since the environmental impact of RFG is very nature-friendly and is in a way a means of future-proofing against pollution caused by regular gasoline. Gasoline/Oxygenated Blends Or E-85When we talk about ethanol mixed gasoline, E-85 comes up for specific reasons. The E-85 type gasoline is one with 85% ethanol and 15% regular gasoline. This is linked with high performance and low mileage. But one needs first to identify if the vehicle is E-85 compatible or not. For the Chevrolet Tahoe, only the vehicles with 5.3 liter V8 (Code 0) and 5.3 liter V8 (Code 3) can use E-85. The eighth letter of the vehicle identification number (VIN) shows these codes. It is located at the top left of the instrument panel. For the other generations of Chevrolet Tahoe, if your vehicle has a FlexFuel badge and also has a yellow gas tank cap, it means your car is E-85 compatible, and it is safe to use E-85 gasoline.  It is essential to know that using E-85 may lead to some issues that can be prevented if the below measures are adopted:
While these measures have already been taken, there could be a probability of some symptoms one may observe in the vehicle behavior, such as:
Gasoline With Added MaterialsSome available gasoline types come premixed with certain additives. These additives can be engine cleaning agents, detergents, anti-corrosion agents, etc. Their purposes vary from one to the next. Sometimes the idea is to have the engine cleaned of corrosion, and at times, it enhances the engine’s performance and life. Chevrolet recommends Top Tier Detergent gasoline as safe for use in Chevrolet Tahoe. Other types are not seen among the recommended gasoline list in any Chevrolet Tahoe’s owner’s manuals. Gasoline With MMTMethylcyclopentadienyl manganese tricarbonyl (MMT), an octane enhancer, is available at certain gas stations. Gasoline with MMT is known for reduced spark plug life and potential issues with the proper functioning of emissions systems we have in every vehicle we see today. Chevrolet suggests against the use of gasoline with MMT for its cars. This stands valid for all generations and engine variants of the Chevrolet Tahoe line of SUVs. BiodieselBiodiesels can be obtained from soybean oil and are very nature-friendly. These are biodegradable and can be sourced at times from yellow grease and canola in some cases. It is a drop-in biofuel meaning it is compatible with currently available engines. Since Chevrolet Tahoe was also launched with the Duramax TurboDiesel engine, it is also biodiesel compatible. Chevrolet recommends the use of diesel fuels that contain up to 20% biodiesel blend by volume. Anything more than 20% is not recommended for the Duramax TurboDiesel engines. Also read: What Is The Oil Type, Capacity, And Weight Of A Chevy Tahoe? What If I Hear A Knocking Noise From The Engine After RefillingThe engine knock or spark knock is something almost every driver is familiar with. It causes an uneasy and unhappy feeling whenever a driver hears the engine knock. This is usually caused if the minimum grade of 87 octane-rated is used in a vehicle and is relatively standard. This isn’t likely to cause any damage to the engine either. To fix this, it is recommended that gasoline with a higher than 87-grade octane rating be used. This is a quick fix to the spark knock. If the knocking sound is still audible, then it is time for a service. Does the Chevy Tahoe Have Good Gas Mileage?The usual mindset of an SUV buyer isn’t that of a fuel economy focussed driver. The typical acceptable range for an SUV buyer for the MPG figures is between 15-25 MPG. Let’s look at how different generations of the Chevrolet Tahoe perform in the fuel economy sector. 2021 – PresentThe fuel economy numbers for the 2021 generation of Chevrolet Tahoe are not available at the moment. Still, one may deduce that since the engines are pretty much the same size as that of the previous generation, the fuel economy numbers could also be similar. 2015 – 2021There were two engine sizes available for the 4th generation of the Chevrolet Tahoe. A 5.3 liter ECOTEC3 V8 and a 6.2 liter ECOTEC3 V8. the 5.3-liter achieved 16 MPG to 22 MPG. If you used E-85, the fuel economy would worsen and give you anywhere from 11 MPG to 16 MPG. For the 6.2 liter engine, the fuel economy range is between 14 and 22 MPG.
2007 – 2014The Chevrolet Tahoe from 2007 till 2014 had four different engines. Vortec 4.8 V8, Vortec 5.3 V8, a 6.0 liter Vortec 6000 hybrid, and finally a 6.2 liter Vortec 6200. The 4.8-liter could achieve 14 to 19 MPG. The 5.3-liter could achieve 15 MPG to 21 MPG on gas, and on E-85, it could go down on fuel economy, achieving anywhere between 11 to 16 MPG. For the 6.0-liter hybrid engine, the fuel economy was better, ranging from 20 to 23 MPG. The 6.2 liter Vortec 6200 engine was between 12 to 19 MPG and a meager range of 10 to 14 MPG if driven on E-85.
2000 – 2006The second generation of Chevrolet Tahoe came with two engines. One was a 4.8 liter V8, and the other option was a 5.3 liter V8. The 4.8-liter engine had a fuel economy range from 14 to 18 MPG. This range got worse for the 5.3-liter engine and could only get you from 13 to 17 MPG. If you were running the 5.3-liter on E-85, it dropped even further and gave anywhere from 10 to 13 MPG.
In a nutshell, Chevrolet Tahoe is not for someone always keeping an eye on the fuel gauge since the overall fuel economy one can derive from the Tahoe is less than ideal. What’s The Gas Tank Size Of A Chevy Tahoe?All generations of the Chevrolet Tahoe came with a 26 gallons fuel tank as standard. Only the current generation has a tank capacity of 24 gallons. Also read: Chevy Tahoe Transmission: Overview, Problems, Fluids How Much Does It Cost To Fill Up A Chevy Tahoe
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Have More Questions? Join Our Facebook Group!Do you have any more questions that weren´t answered in this blog post? Join our free Facebook group and ask your question there. We promise you you´ll get an answer from one of our team members. Join the group here! What type of gas does a Chevy Tahoe take?Chevrolet's minimum suggested fuel type in the Chevrolet Tahoe owner's manual is 87-grade octane gasoline for the 5.3-liter engine. For the 6.2-liter higher output engine, although the minimum is 87-grade octane, Chevrolet suggests that it would be better to use 93 instead of 87-grade octane.
Can Tahoe take E85?Included Active Fuel Management will shut down half of the cylinders to save gas during steady-speed cruising or coasting. The engine is also capable of running on flex-fuel mixes up to E85 (85 percent ethanol).
Are tahoes good on gas?Despite its large size, the Chevy Tahoe gets comparable fuel economy to other full-size SUVs. So you'll be pleased that the Tahoe's gas mileage goes up to 28 mpg on the highway and 21 mpg in the city.
What kind of oil does a Chevy Tahoe 2000 take?Engine Oil
5W-30 - SAE 5W-30 is preferred. Capacity: With filter 6 quarts. After refill check oil level.
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What kind of gas does a 2000 chevy Tahoe take
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