I saw an 80's vw rabbit 1.5l diesel and the ad poster says the engine stopped running because it was filled with biodiesel. Is this possible? Is there a way to clean out the engine? I messaged the guy trying to get the full story.
What is possible, actually fairly common, is biodiesel is such a good detergent that it picks up all the debris in the tank and clogs all the fuel filters. Conceivably, that could damage the injector pump, but more likely just won’t start due to no fuel pressure. No way it could damage the engine.
Alot of those old ViWi Rabbit owners used to blend or manufacture their own BioD. I had a few of those 1.5 & 1.6 way back when.
That french fry oil could get rancid over time and corrosive. BioD is also more prone to microbes that result in sludge.
I would ask the Seller about the origin (feedstock in tech lingo) of the BioD and the timeframe it has been in there.
Damaged parts can always be replaced but unless the rest of the car is in perfect condition, its value is probably not much more than a “get it off my property”. Alot of current owners have been collecting junkers for parts and have 3-4 in their yard. This would be your competition.
I prefer the 4-door Golf over the Caddy pickup but I have owned both—always stickshift. They are pretty slow but you can probably still pass the occasional bicyclist if you time it right on the downhills. ?