Keystone RV Forums - View Single Post - GM Recommends TopTier Diesel, but it's hard to find

tundrwd · 01-06-2019, 09:15 AM

I think - generally speaking - the trick is using a "better" quality diesel, and at a place that really goes through it so you get fresh diesel. Good fuel stations - truck stops. Also - don't let it sit in your tank a long time. KEEP YOUR TANK FULL WHEN ITS SITTING FOR PERIODS OF TIME!!! Why do aircraft keep their fuel tanks full when sitting? Because they get condensation inside the tank if they aren't full, and water/fuel don't mix. You don't want your diesel to get a slug of water in it. Fuel floats on top of water, and your fuel pump is at the bottom of the tank.

While my truck is mainly for towing my trailer, I still go out once or twice a week, every week, and drive 30-40 miles minimum. Also put it 4H/4L occasionally just to keep the lubrication moving around...

01-06-2019, 09:15 AM	#46
tundrwd Member Join Date: Jul 2016 Posts: 81	I think - generally speaking - the trick is using a "better" quality diesel, and at a place that really goes through it so you get fresh diesel. Good fuel stations - truck stops. Also - don't let it sit in your tank a long time. KEEP YOUR TANK FULL WHEN ITS SITTING FOR PERIODS OF TIME!!! Why do aircraft keep their fuel tanks full when sitting? Because they get condensation inside the tank if they aren't full, and water/fuel don't mix. You don't want your diesel to get a slug of water in it. Fuel floats on top of water, and your fuel pump is at the bottom of the tank. While my truck is mainly for towing my trailer, I still go out once or twice a week, every week, and drive 30-40 miles minimum. Also put it 4H/4L occasionally just to keep the lubrication moving around...