leswhitt
Full Access Member
As mentioned in one of my posts not too long ago, I had a recent batch of oil that was too thick and I had a bit of smoking. To keep that from happening again, I will now do a viscosity check on all my oil to make sure that some hidden gear oil or otherwise thick oil doesn't get the better of me and cause more smoking again.
To set a baseline flow time, I took a 3 qt bleach bottle, drilled a 1/4" hole through the cap, and then cut the bottom off. Using a measuring bucket from Home Depot, I metered out 64 ozs of whatever I was testing and timed how long it took me to pour the liquid through the 1/4" hole. Since there were a few variables, I ran all the tests at least 3 times and used the average. There wasn't much fluctuation though, I was never off more than 2 seconds in any of the tests.
Here's my results:
Gas- 1:21 mins
Kerosene - 1:35 mins
Diesel - 1:37.5 mins
________________________________
100% Waste Oil - 9:24 mins
80% Waste Oil/20% Gas - 2:14 mins
75% Waste Oil/25% Gas - 1:53.5 mins
70% Waste Oil/25% Gas/5% Kerosene - 1:51 mins
70% Waste Oil/20% Gas/10% Kerosene - 2:07 mins (I need to run this one again because the number I wrote down is smudged)
Based on those numbers, I''ll now aim for sub 1:55 mins viscosity on future mixes going through my truck. Ideally I'd like to get as near to the diesel time as possible but have reservations about running more than 25% gas in my mix. The addition of kerosene didn't do much to reduce the time so I won't be using that in my mix unless EGT's or engine noise dictates that my mix isn't combusting well.
As for conclusions, it's clear that a little gas goes a long way, as shown by the 100% oil vs 80% oil vs 75% oil times. I finished at 2am and needed to hit the sack but am interested in seeing the flow time for a 70% Waste Oil/30% Gas mix. If it drops as much as the 80 to 75, it might mean that a 70/30 mix would flow faster than diesel. Who knows how the mix would combust but at least the viscosity issue would be solved.
Another conclusion is that when mixing gas and oil, it needs to be stirred or agitated if you add the oil first and the gas second. Adding the oil first means the gas sits on top, although it does slowly start to trickle through. If you add the gas first, it's interesting how the poured oil goes through the gas to the bottom of the measuring bucket and then lifts the gas up. Adding the gas first is definitely the recommended way to go since the oil passes through it but it's still good to stir it and ensure they mix together.
Once I run the sub 1:55 mix through my truck next week on a 1,500 mile Thanksgiving trip, I'll report my findings. In the past I've run 83% waste oil/17% gas with minimal smoking and hope this next mix will be the final tinkering solution!
To set a baseline flow time, I took a 3 qt bleach bottle, drilled a 1/4" hole through the cap, and then cut the bottom off. Using a measuring bucket from Home Depot, I metered out 64 ozs of whatever I was testing and timed how long it took me to pour the liquid through the 1/4" hole. Since there were a few variables, I ran all the tests at least 3 times and used the average. There wasn't much fluctuation though, I was never off more than 2 seconds in any of the tests.
Here's my results:
Gas- 1:21 mins
Kerosene - 1:35 mins
Diesel - 1:37.5 mins
________________________________
100% Waste Oil - 9:24 mins
80% Waste Oil/20% Gas - 2:14 mins
75% Waste Oil/25% Gas - 1:53.5 mins
70% Waste Oil/25% Gas/5% Kerosene - 1:51 mins
70% Waste Oil/20% Gas/10% Kerosene - 2:07 mins (I need to run this one again because the number I wrote down is smudged)
Based on those numbers, I''ll now aim for sub 1:55 mins viscosity on future mixes going through my truck. Ideally I'd like to get as near to the diesel time as possible but have reservations about running more than 25% gas in my mix. The addition of kerosene didn't do much to reduce the time so I won't be using that in my mix unless EGT's or engine noise dictates that my mix isn't combusting well.
As for conclusions, it's clear that a little gas goes a long way, as shown by the 100% oil vs 80% oil vs 75% oil times. I finished at 2am and needed to hit the sack but am interested in seeing the flow time for a 70% Waste Oil/30% Gas mix. If it drops as much as the 80 to 75, it might mean that a 70/30 mix would flow faster than diesel. Who knows how the mix would combust but at least the viscosity issue would be solved.
Another conclusion is that when mixing gas and oil, it needs to be stirred or agitated if you add the oil first and the gas second. Adding the oil first means the gas sits on top, although it does slowly start to trickle through. If you add the gas first, it's interesting how the poured oil goes through the gas to the bottom of the measuring bucket and then lifts the gas up. Adding the gas first is definitely the recommended way to go since the oil passes through it but it's still good to stir it and ensure they mix together.
Once I run the sub 1:55 mix through my truck next week on a 1,500 mile Thanksgiving trip, I'll report my findings. In the past I've run 83% waste oil/17% gas with minimal smoking and hope this next mix will be the final tinkering solution!
