Thread: Diesel Tank Lifespan?

That's interesting. Diesel is by nature non-corrosive, being essentially a pure hydrocarbon. I wonder, do you live in a particularly humid area? Do you keep the tank more full than empty? Could there be some form of electrolysis going on? I'm no chemist, but I've seen tanks 50 years old that are cleaner tham that.

Or do you either live where roads are salted in winter or do a lot of beach driving? I had to replace my original tank due to corrosion from the mud trapped between the tank and the bash plate.

Originally Posted by JDNSW

I had to replace my original tank due to corrosion from the mud trapped between the tank and the bash plate.

I've seen the tanks KLR sell for the Perentie and they come from the manufacturer poorly sealed with silicone rubber between the bash plate and the tank itself. KLR peel that out (it comes out easily as it hasn't bonded to the painted surfaces) and reseal the gaps with Sikaflex which sticks like the proverbial to a blanket. The idea is to stop dirt and mud being trapped between the bash plate and the outside of the tank.

Perentie Right Hand Fuel Tank - KLR Automotive

Roads are not salted here. It is humid through summer months. I struggle with how some form of electrolysis could be triggered in the tank.

Originally Posted by Tins

That's interesting. Diesel is by nature non-corrosive, being essentially a pure hydrocarbon. I wonder, do you live in a particularly humid area? Do you keep the tank more full than empty? Could there be some form of electrolysis going on? I'm no chemist, but I've seen tanks 50 years old that are cleaner tham that.

It is kept more full than empty. It is humid (80-95%) for a few months near the end of summer.

Originally Posted by Tins

That's interesting. Diesel is by nature non-corrosive, being essentially a pure hydrocarbon. I wonder, do you live in a particularly humid area? Do you keep the tank more full than empty? Could there be some form of electrolysis going on? I'm no chemist, but I've seen tanks 50 years old that are cleaner tham that.

Originally Posted by tc_s1

I struggle with how some form of electrolysis could be triggered in the tank.

Me too, but I also struggle with why the corrosion is happening at all, especially in the time frame. Electrolysis is a question I needed to ask.

I appreciate that the tank is out of warranty, but have you approached the company anyway? They may have some insight.

I'd have thought that the diesel fuel sloshing around would have coated various parts and prevented them from corroding.

Originally Posted by p38arover

I'd have thought that the diesel fuel sloshing around would have coated various parts and prevented them from corroding.

Exactly. That's what makes it so mysterious.