I often hear people suggesting or asking if you should not premix on the occasional fill-up, to prevent the ratio of 2T gradually increasing. An understandable assumption, as there is always a bit of 2T oil left in the tank before you add yet more.
However if you think about it, as long as you always add petrol and 2T at your chosen ratio the mixture in the tank will remain close to this, and even iterate back towards it after the odd skipping or overdosing of 2T.
Have a look at this table:
It calculates how much 2T per litre of petrol your tank would contain after filling with given amounts of each. It starts with a non-premix fill, then from then on follows a typical 125ml per tank regime with a few curve balls added, like a 20litre non-premix get-you-home, and a higher than normal dose amongst less radical variations.
As you can see the ratio always works back towards around 440:1 if you follow an average 125ml shot per 55L fill-up. So as long as you target a certain amount per tank and adjust this accordingly (i.e. half as much 2T for half a tank fill etc.) then you will not eventually end up with a tank of pure 2T oil
Why you don't need to 'reset' your premix
Read the Frequently Asked Questions that have been accumulated over time.
- Phil Bate
- Spin Doctor
- Posts: 9429
- Joined: Thu Mar 22, 2012 12:49 am
- RX-8: Kuro
- Colour: Sparkling Black
- Location: Cotswolds
- Has thanked: 52 times
- Been thanked: 221 times
Why you don't need to 'reset' your premix
Phil's subtle sunlight silver - stronger, faster, with added red bits and stuff engine donor!
Operation Mint - Kuro preservation project
The pimped out Glacier White XE - quintessential British motoring from Jaguar
Operation Mint - Kuro preservation project
The pimped out Glacier White XE - quintessential British motoring from Jaguar
Return to “FAQ - Frequently Answered Questions”
Jump to
- The Lobby
- ↳ Forum Guide - Read First
- ↳ FAQ - Frequently Answered Questions
- ↳ Hello.. I'm new here..
- ↳ Goodbye... I'm leaving...
- ↳ RX-8 Discussion
- ↳ For Club Members
- ↳ Club Organised Meets
- ↳ RX-8 Photos and Videos
- ↳ Personal Car Projects and Mods
- ↳ Power Modifications
- ↳ Buying and Selling
- ↳ FAQ - Technical
- ↳ The Forum Lounge
- ↳ Mazda Dealer & Specialist Independents Reviews
- ↳ Traders Section
- ↳ Disclaimer! / Contact details
- ↳ Adrian Flux Insurance Services
- ↳ Boston Rotary
- ↳ Howden Insurance
- ↳ JP4mance Tuning Parts Ltd
- ↳ Kernow Rotary Specialist
- ↳ Piston & Rotor The Garage
- ↳ Racing Beat Europe
- ↳ Reuleaux Prints
- ↳ Former Traders Sections (Read-only)
- ↳ Member Benefits & Discounts *Moved from Lobby*
- Events and Meetings
- ↳ Events
- ↳ The Vault
- ↳ Pub & Restaurant Meets
- ↳ Past Pub & Restaurant Meets
- ↳ Social Static / Drive Meets
- ↳ Past Social Static / Drive Meets
- ↳ Car Activity and Track days
- ↳ Trackday Information & FAQ's
- ↳ Car Activity and Track days Archive
- ↳ Club Organised Meets
- ↳ Past Club Meets
- RX-8 Garage
- ↳ RX8 Photos and Videos
- ↳ Aftermarket
- ↳ Detailing - Cleaning
- ↳ DIY
- ↳ RX8 Hints and Tips
- ↳ Personal Car Projects and Mods
- ↳ Power Modifications
- ↳ Boost Junkies
- ↳ Naturally Aspirated
- ↳ The Other Car..
- ↳ Buying and Selling
- ↳ Club Shop
- ↳ Buying
- ↳ Group Buys
- ↳ Group Buys Archive
- ↳ RX-8s for sale
- ↳ Selling Parts
- ↳ Selling Other Items
- ↳ Free RX-8 items
- RX-8 Owners Club Members Area
- ↳ RX-8 General Discussion - Members Only
- ↳ Private Car Projects
- ↳ Benefits and Discounts - Members Only
- ↳ Downloads and Goodies
- ↳ The Vault
- ↳ Ask The Spin Doctors
- ↳ FAQ - Technical
- ↳ The Forum Lounge
- ↳ Sports & Entertainment
- ↳ Technology
- ↳ Prize Competitions
- ↳ Archive
- ↳ 2017 Winter Model Building Competition
- ↳ Club, Committee and Communication
- ↳ Important Messages for Members
- ↳ Elections Archive
- ↳ Members Details
- ↳ What Do Members Want?
- ↳ Official Club Documents, Procedures and Policies
- ↳ AGMs & Committee Meetings
- Mazda Dealer & Specialist Independents Reviews
- ↳ Mazda Dealer & Specialist Independents Reviews
- ↳ England - North East & North West
- ↳ England - Midlands & East Anglia
- ↳ England - South West & West Country
- ↳ England - South East, Home Counties & London
- ↳ Scotland
- ↳ Wales
- ↳ Northern Ireland
- Traders Section
- ↳ Disclaimer! / Contact details
- ↳ Adrian Flux Insurance Services
- ↳ Boston Rotary
- ↳ Howden Insurance
- ↳ A-Plan Insurance (2012-2018)
- ↳ A-Plan Insurance (2023)
- ↳ JP4mance Tuning Parts Ltd
- ↳ Kernow Rotary Specialist
- ↳ Piston & Rotor The Garage
- ↳ Racing Beat Europe
- ↳ Reuleaux Prints