Fuel Guide Diesel, Petrol, Race fuel, Ethanol & blends of E85 E10 E5 E15

What do octanes and E numbers mean?

With all the fuels grades and ratings around it can be a challenge to get the best fuel for your engine.

Industry insiders explain the fuels in our guides and articles and help you to make an informed decision when selecting fuel.

We explore the many different types of fuel and grades on the market, suggestions advantages and disadvantages for each, and where possible we outline options to convert engines to run on them.

We include Octane and Cetane explanations and what the E numbers mean and if they can harm your engine.

We also discuss Methanol and Nitromethane fuels and look at race fuels.

Oil Dilution

We discuss the growing problem of oil dilution, the causes of this, how it can be prevented or minimized and the frequency of oil changes required after dpf regeneration or short journeys and cold starts.


Why Diesels Are More Economical

A look at the reasons why a diesel engine is more economical than a gasoline engine and explanation of the differences between these two combustion processes.


Hypermiling

Follow our Hypermiling techniques to save substantial amounts of fuel, we look at driving techniques, car care and some mods that can all improve your fuel consumption, saving you a massive 20-50% of your fuel usage!


Tracking your MPG

We look at why drivers should regularly calculate their MPG and the benefits that come from tracking your cars fuel economy over a few tank fulls of fuel. See our tips on MPG calculating and why it matters in this article.




Please watch this video on our new YouTube channel.

Member Benefits

Join our forum today and benefit from over 300,000 posts on tuning styling and friendly car banter.

You will also have full access to the modifed car gallery, project car updates and exclusive member only areas.

(All car owners of all ages and from all countries are welcome).


BMW 335i - 2021 COTY

We gave the BMW 335i our coveted car of the year award, read more about this awesome car and see why 335i Tuning Guide

Tips for N54 Tuning

Tips for N55 Tuning
Tips for B58 Tuning

Popular articles

Tuning diesels
ECU Remapping
double clutching
Induction Kits
Customize a car
Chipping cars
Modded Car insurance
Track day insurance cover
Remapping Diesels
MPG calc
Cleaning a DPF
Tuning Stages


Tuning Stages

Stage 1, 2 & 3 tuning mods explained
Read more...

Benefits Performance Injectors

The Benefits of Performance Injectors vs. Stock Parts
Read more...

Strut Braces

Fitting Strut Braces and how to install a strut brace
Read more...

Rebore Engine

Reboring engines
Read more...

Stage 3 Tune

Stage 3 tune
Read more...

Suicide Doors

Suicide doors
Read more...

Lowerering

Lowering the suspension. Ride height adjustments.
Read more...

Engine Dress Up

Engine styling dress up kits
Read more...

Carbon Vents

Air vents – bonnet and carbon body vents.
Read more...

MPG Calculator

MPG calculator UK miles per Gallon - calculate MPG and save fuel
Read more...