ChunHall

I might have been a bit facetious in my last comment 😅 I haven't checked prices of vegetable oil - it's not something I buty much of. Wholesale, I'd guess it's probably doubled in the last year like most other foodstuff.🙄 A few hours reading online and a couple of YouTube videos isn't much hardship to be fair. 🤷‍♂️ The only money I've spent so far was to get the other car through its MOT ready to be sold 👍

Yeah, you're right. It'll be completely impossible to find out how local restaurants and takeaways dispose of waste veg oil before I first spend thousands on a project that relies on it. If only there were a way I could find out this information first. Maybe the whole idea is too ridiculous to consider, since it would be impossible for me to find this out.

🤣🤣🤣 Must be a lot of cooking oil, surely! Fortunately, I'm nowhere near Aberdeen or Liverpool, so hopefully these issues won't affect me 🤞🙈

I haven't asked yet. I'm hoping that they have to pay to get rid of it 🤞 But even if someone else collects for free/pays for it, I'll still be buying for pennies per litre instead of £s 🤷‍♂️ Worst case, there's another 4 chipshops in town, and the retail park with McDonalds is next door to me too! 🤣🤣 I have a few things to tidy up on the other car before it's sold, so I could be a few weeks off buying the vegmobile, let alone getting any work done to it. I've got plenty of time to search for vegan juice.

Not yet, but I'm only a hundred yards from a chip shop 😆

I agree most people would probably be better off working to earn the difference in fuel prices. I'm not really doing this for an economic reason. I have a spare car, which I need to sell for around £6k, and thought it might be an opportunity to get a "fun" project car. I don't expect fuel prices to go down any time soon, so the conversion seems like a sensible move for something "fun".

I should probably clarify the setup I envisage: TL;DR I've done a fair amount of planning and research for the fuel system, I'm just trying to work out if there's enough space to fit another fuel tank in a way that looks "OEM". • Car starts on diesel (probably premium diesel to help clean the injectors). • Once engine is up to temperature, the fuel supply switches to a separate tank filled with veg oil - probably waste veg oil (WVO) pre-filtered to <5micron, possibly thinned using 3% kerosene-free (for tax purposes) white spirit. • I'd keep all relevant paperwork as proof of what has been produced (ie. I'd try to stay below the 2,500l/yr limit for fuel duty). • The veg oil passes through a heat exchanger to lower the viscosity before hitting the injectors. • Before engine is shut off, fuel system is purged to return veg oil (and a small amount of diesel) into into the veg oil tank. I've given some thought to electronics for automatically switching to veg tank once temp is reached and fuel level is enough, switching back to diesel is veg level is low, purging fuel lines with ignition off etc. This could all easily be done manually, but automatic would be pretty cool. I would also like to change some parts like intake, injectors, and head bolts to the PD150 versions (probably turbo, exhaust and intercooler if budget permits) and remap to ≈170bhp on diesel, which might give ≈160bhp on veg oil. Nothing wild - just enough. From my memory owning a Fabia, there wouldn't be space for a second tank. From my memory owning an Octavia1 (1.9 TDI L&K 😏) there would be space under the boot floor for a tank. Like I said, I understand the 6 speed is meant to be more durable than the 5 speed, so it seems my choices are Octavia 4x4 (which would make a cool vRS replica) or Fabia vRS... 5 speed would probably be okay, but it seems then even then I don't gain the under-floor boot space of the Octavia1 😔

There seem to be enough people doing it with the 1.9 TDIs and SDIs. I think it's the DPF that stops it being used on newer engines.

That's annoying 🤔 I might have to look at putting a tank to one side of the boot. I don't like the idea of being without a spare... I'm happy with the 1.9 - it's a good engine, and I really can't be arsed with all the hassles of a DPF.

Are you saying variofloor actually reduces the space available under the floor? I'm aware the Haldex clutch, pump etc is all attached to the diff, I just wasn't sure if there were two different floor panels used for models with/out 4wd.

On the Mk1, there's space for a spare and a tank - on the Mk2, is it just space for a space / spacesaver?

*removed

I'm looking to buy an Octavia 1.9 TDI PD 4x4 for a conversion to vegetable oil and a few modest performance mods. I was looking at the 4x4 because it has the 6 speed gearbox, which I understand is stronger than the 5 speed. Anyway, I was wondering about the space under the boot floor - on the Octavia MK1, I know there's space for a spare wheel and a second fuel tank, but I can't find any information on the Mk2, especially with 4x4 (does the haldex take up boot space?). Does anyone have any info? I've attached a picture from a Mk1