I've been exploring the option of using an older diesel engine (for instance GM 6.2 IDI, ford 6.9 IDI, early VW 1.6 IDI, cummins 6bt P-pump) to explore running a variety of waste fuels (whatever turns up) in high percentages (right up to 100% if it will run) to save substantially on fuel bills.
Any actual scientific studies i've read seem to indicate that this is hard on the engines and they don't last excessively long due to various kinds of build ups of things that wont burn (at least in the case of vegetable oils) in the chambers, and having the oil go bad fairly rapidly with buildups in there.
What i'm having a hard time finding is exactly what is deposited into the chamber and oil (specifically oil for this topic) from fueling with those oils, and whether there are strategies you could do to get more life from both engine and oil. Whether it would require far more often oil changes (too much unremovable [censored]) or whether certain additives could counteract or get it out or similar. It's possible running waste oils and having long 25k service intervals with bypass filtration wont work due to a buildup of other more chemical gunk.
If nobody knows, will commonly done oil analysis tell me whats ending up in there or do they only test for things seen in 'normal' engines?
Any actual scientific studies i've read seem to indicate that this is hard on the engines and they don't last excessively long due to various kinds of build ups of things that wont burn (at least in the case of vegetable oils) in the chambers, and having the oil go bad fairly rapidly with buildups in there.
What i'm having a hard time finding is exactly what is deposited into the chamber and oil (specifically oil for this topic) from fueling with those oils, and whether there are strategies you could do to get more life from both engine and oil. Whether it would require far more often oil changes (too much unremovable [censored]) or whether certain additives could counteract or get it out or similar. It's possible running waste oils and having long 25k service intervals with bypass filtration wont work due to a buildup of other more chemical gunk.
If nobody knows, will commonly done oil analysis tell me whats ending up in there or do they only test for things seen in 'normal' engines?