DMichael

My Feedback: (5)

With everything going on last year, I did not fly my jet, and I have both mixed and unmixed diesel fuel that is about 18 months old. I'm planning on getting the jet back in the air soon and I have some questions.

- Is the 18 month old mixed diesel OK to run? It's mixed using Kingtech oil and I'll be running it in a Kingtech 140 G2.
- Is the18 month old unmixed diesel OK to add oil to and run after sitting that long?
- Any concerns with algae with either?

- I'm using a BVM UAT that's about 3-4 years old but does not have a lot of flights on it. It's had fuel in it the entire time. Is there a point at which you would need to replace the bag in the UAT?

- Anything else you would check on a jet that's been sitting this long before flying?


Thanks

AEROSHELDON

My Feedback: (99)

I have these same questions.

I have used Bidor in the fuel so algae should be ok? I will also use a Mr Funnel on it to remove the water, but I got one and have not used it yet....

Looking forward to the wisdom of the group on this.... Thank you DMichael for posting.

bcovish

My Feedback: (8)

If you have a vehicle that requires diesel, the next time you fill up, dump it in the vehicle before you fill up then buy new diesel for the jet.

NZjet

Diesel dosnt go "off" yours will be fine stored in a container. I am using jetA from a few years ago and it's fine.

CARS II

My Feedback: (7)

Ok, here is my take on this subject.

Regarding the UAT bottle, the UAT bottle is fine, there is no need to change it, I got UATs that have been in airplanes nearly 15 years, the sox can be change if you think there is algae in the fuel, if you did not added algaecide to the fuel then, there maybe some of it in the cans, the clear algae is the one that will clog the fuel filter, it's hard to see because it is clear.

Here is a thread on the subject.

Algae in fuel tanks

CARS II

My Feedback: (7)

FS3 Airtex.

CARS II

My Feedback: (7)

Use this spray cleaner to clean the fuel filters, we are looking for plastic safe.

CARS II

My Feedback: (7)

The algaecide we all use, put the needed cc x2, then leave it untouched for a week, same thing for the fuel system in your jet, fill up with Diesel with the algaecide, leave the vent open, let it seat for a week, clean the filter, continue to use algaecide from there on, clean the filter once a season.

That is how my jets have been algae free for over a year now.

Excellent idea to use Mr: Funnel to remove any water in the fuel.

Zeeb

My Feedback: (41)

Not sure some here would consider me part "of the group", but here's my thought; I have some nice clean Kerosene that's about three years old and not used due to personal issues I've experienced the last several years. It's mixed with JetCat oil which has the anti-static additive and I used BioborJF. I have two five gallon jugs of the stuff in those semi-clear big mouth plastic jugs like you see the NHRA drag racers use for their nitro fuel. Point is, if anything shows up in those jugs you can see it. I also have a five gallon Jersey Modeler blue jug, the old style "flat" version which you cannot see into. The last couple of weeks we've been running and flying jet models that I've had for quite some time without them being even started let alone flown; so far we've not had a lick of trouble with any of them. I also have the Mr. Funnel filters and will use those when I refill the Jersey Modeler jug, but I do not anticipate any issues. IF I do run into some issues of contamination, I'll be posting those issues here.

I'm sure there will be those here who find my post foolish....

Dansy

My Feedback: (53)

Since you do a Biobor treatment your fuel should be good, I used Diesel and I do the same and my fuel stay good….

‘’the problem is if the fuel is not treated…like I think it’s in his case, then I think he certainly has algae issues, and yes you can do a strong treatment, but I think the same happen to his tank, filter and UAT.

What I would suggest dump the diesel into a a vehicle….get fresh stuff….also open and flush the Fuel tank, filter and UAT. No sense loosing a jet over a little work and money.

DMichael

My Feedback: (5)

Thanks, everyone. Overwhelmingly (both here and responses to the same question I posted on the Facebook "RC Turbine Jets" page) the responses have been that I should assume that the fuel has algae, I should clean out my tank/UAT/onboard systems (and fuel jug), use Biobor to deal with any algae and start over with new clean fuel, using Biobor in my fuel jugs going forward. I also have the Mr Funnel filter to remove water and will continue to use that.

It's a small pain to have peace of mind and much less bother than a flameout...