What kind of gas bmw x5

It is important to remember that when you purchase a BMW , you are buying a vehicle of superior quality. Your BMW is packed with innovative features and technologies that need to be treated with care if you want to retain the high performance levels of your BMW. This starts with the type of gas that you use. BMWs need to be fueled with high-octane fuel. Use "top tier" like Shell or Sunoco fuel that contains detergents and meets a certain standard to keep your engine clean.

This wil prevent dirty injectors and carbon build up, which can cause detonation. Another issue is using low octane fuel. Octane number indicates at what pressure fuel will self ignite. The twin-turbo in your X5 40i provides higher pressure before combustion then a naturally aspirated engine.

Obviously you want the ignition system to determine the moment of ignition. Using low octane may cause pre-ignition, which may be noticeable but can cause problems over time for sure. Not the most scientific explanation but hope it helps people tace care of the car. Originally Posted by MystroX5. Lieutenant Colonel. If you are in a situation where you only have reg 87 it won't hurt. The X5 computer will adjust timing for it.

But running it long term can cause damage to the internals and specially if a knock sensor fails I have seen this put pistons in pieces, my grandfathers caddy. Yes fuel can be tested easily to show you are not running recommended octane and warranties can be voided because of this also read the warranty disclaimer they have one on fuel.

My question to anyone why wouldn't you run the 91 recommend??? I didn't buy a SAV to be cost minded or fuel efficient. It cannot be fuel mileage bc the cars knock sensors will retard the timing meaning less efficient combustion of the fuel its self more actual wet fuel going out the exhaust.

So why would you not run it, unless you simply didn't have it available???? Appreciate 1. Nothing below 91, and BMW recommends 89 as the minimum. There are several warning notices in the Owners Manual - probably the Ethanol content is the most important recommendation maximum 10 percent. However, from the manual: NOTICE Fuel that does not comply with the minimum quality can compromise engine function or cause engine damage. There is a risk of damage to property. Do not fill with fuel that does not comply with the minimum quality.

This Shell recommendation sticker is on our week 40 M50i. Some BMWs do require premium gas. These are the most common reasons a Bimmer may require premium, but is by no means an exhaustive list. Here you can find a full list of BMWs model years that require premium and here is a list of BMWs that recommend premium, but will run on regular. Call us at or complete the contact form to schedule your appointment!

The short answer is: NO! So how can you tell if you own a car with a high-compression engine? Generally, BMW M cars fall into one of these two categories. The fabled e39 and e46 cars from the early s each featured Sorry, M owners, but that extra gusto comes at a price. The fact remains: technology has mostly mitigated the threat of major damage from running low-grade fuel.

Standard BMWs are at a minimal risk of damage and even very high-performance cars probably have the technological wizardry to adjust at the cost of horsepower.

How acceptable a potential ping is in your Bimmer is something each owner must decide. Choose wisely!