Plant Oil - Comparison: Refined vs. Cold-Pressed?

I recently spoke with a colleague who works in the agricultural sector. We stumbled upon the topic of plant oil (he had a eucalyptus leaf lying around).

He stated that cold-pressed plant oil is better for the fuel injection system because it does not contain acids that are released during refining.

What is against it is the higher viscosity of the cold-pressed oil, in which the refined oil is simply better.

But, how should we really view the whole situation? Are the acids really that bad, or does the viscosity of the cold-pressed product play a much larger role?

Best regards, WarLord

Okay, let's go:

http://www.salatoel-kombi.tk/

I have read that even a 1% diesel content in the oil can halve the viscosity. Therefore, this should not be a problem if you use a balanced diesel-oil mixture. But there are also other noteworthy points, such as the significantly higher flash point.

I currently drive without any modifications (AFN), with 50% Pöl (presumably a specific oil product) in the diesel, and at 0°C, I haven't experienced any starting problems, despite the slightly higher viscosity. But it also has a small advantage -> less oil leakage, so there is more left for combustion.

And that, neither gilding the Sheikh's toilet bowl nor plugging the holes created by the Finance Minister's own debts, is clear, but what the farmer around the corner does is, of course, obvious...

Hello!

Hello,

So, we also use PÖL. Previously filled up at Aldi, now finally after 3 years at the oil mill.
And the cold-pressed oil from the oil mill appears to us as more liquid.

Best regards, Rodion

Raffinat oil is cheaper than cold-pressed oil.

Could anyone tell me if this salad oil can be used for a stand-by heating system?
because then I would rather not turn them on when I am filling up with petrol.

Hi!

Raffinat is usually cleaner, but with cold temperatures, it depends on the oil mill, I'm filling up.
also cold. This often makes cold temperatures more resistant to freezing.

The space heater is not tolerant of dirt.

Operating a DI without an overhaul, even with a mixture, is bold. I would pay attention to the oil level.
Bitte beachten Sie, dass alle exakt beibehalten werden müssen.

Hi, Jockel

Good evening,

I don't want to necessarily stand by the statement that Raffinat is cheaper than cold-pressed oil. Usually, it's the other way around. I can only get Raffinat at Lidl or Aldi. There, a liter usually costs around 75 cents. Cold-pressed oil from the mill around the corner costs, depending on the quantity, a maximum of 67 cents including VAT.

Regarding direct injection and 'Pöl': Hmmmm, the risk exists with the 'Pöl' entering the engine oil. My colleague is currently running a PD with an approximately 50:50 mix and has no problems. Also, I know of a sensibly modified A4 TDI that, even at temperatures below -10 degrees, burns 100% cold diesel after the warm-up phase, using two tanks. Both have no problems with 'Pöl' entering. But Jockel is right: the risk exists!

I have no problems with the engine oil when using 50:50 (Raffinat) with AMF (PD).
However, if I already know that I will be driving a lot of short distances, I will fill up with less or no PÖL.

Greetings

Olaf

Hello,

Does anyone know if this salad oil can be used for a space heater?
because then I would rather not turn them on when I am refueling.

I'm also facing the same problem: I plan to use a PÖL mixture (approximately 50/50). However, based on what I've read in relevant PÖL forums, I don't like STH's PÖL. I'm probably going to install a small additional tank (around 1 liter) so that I can occasionally run them during the summer.

Due to the PÖL entry: This should definitely be monitored carefully. Some people in the forums even recommend exchanging the oil after the conversion, due to the potential removal of deposits and the presence of oil filters.

PS: Does anyone know where I can buy larger quantities of PÖL (up to 200 liters) more cheaply than at Aldi and Co. in the Erlangen-Nuremberg area?

I have shortened my oil change interval to 10,000 km. So far, there have been no noticeable issues, even though I haven't been driving long distances.

I can confirm that STHs do not tolerate PÖL, as I have read about it frequently. However, no one was able to provide practical experience, perhaps no one has even tried it yet...

Hello!

P.S.: Does anyone know where I can buy larger quantities of PÖL (up to 200L) more cheaply than at Aldi and similar stores in the Erlangen-Nuremberg area?

If you have a friend who can shop at METRO (Nuremberg Buch or at the harbor), there must be refined in barrels there.

Best regards,
Mathias

Check out a Polish forum and search for 'THALMÄSSING'.
There's definitely something there.
peter

Hm, it seems there isn't really any difference in viscosity.

How about the other point (Acids)? Does anyone know anything about this?

Best regards, WarLord

Yes. I know the Cold as being tougher. Regarding acidity, I can't say anything. But if I had the choice, I would definitely age Raffinat.

Hm, so. It's good that there are multiple opinions on the matter.

Best regards, WarLord