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My 130 has about 100hrs on it and it's been using about 1qt every 2 hours of flight time since new. It varies a bit with RPM. At 4300rpm it'll use 1qt/5hrs and at 4800rpm 1qt/2hrs.
No leaks that I've been able to find. Based on the advise from Alissa, I added a catch can for the valve cover vent and found it pushes about 1/4 qt in that 2 hour span. I'm assuming the rest is being burned.
Alissa also recommended running 10W-30 break-in oil which helped at first, but I suspect it was mostly the increase in viscosity. Since consumption slowly increased again after switching back to the recommended 0W-20.
Anyone else have oil consumption issues with the Viking 130? Were you able to fix it?
I've been pretty happy with the engine otherwise, but adding oil more often than fuel is growing tiresome.
Could a person use an oil dye and UV light to help find the source?
Any progress? Resolved?
Follow Allissa's advice use the break-in oil for more than one oil change, put the engine under various loads,
touch and goes work well, make her grunt.
Troubleshooting 101, varify problem:
1. engine puking oil
Trouble shooting 101
2. possible causes
1. excessive oil use
2. blow-by past the rings(caused by improper break in?) the longer the engine has been run the compression
3. verify oil levels, drain, change filter, add3.5 qts. run, check dipstick.
4.The longer you run non-synthetic oil the better chance the rings will seat, if not pull the pistons re-ring,
and hone the cylinders
Haven't flown it for a little over a month now as life and other things get in the way.
Currently the engine has ~120hrs on it in the plane. Since these are used engines directly from Viking, I'm not sure how much use the engine had on it when I got it. No significant change in oil consumption has been seen over the course of the 120hrs I've been using it.
I'm to the point where I think it's in need of new rings. Could also replace the short block for relatively little money, which seems more convenient than honing and new rings.
One thing that Alissa can't know is how was the car/engine treated before they got it, was it taken care of? or was it abused and used like a street racer.