Can I use this in my 18 wheeler freightliner with a Cummins engine

Yes sir absolutely. You might want to find the bg245 quarts to help save a little monwy

does this product have to be added every time new fuel is added to the vehicle?

In short no. It does not have to be added at every fueling but rather depending on how your vehicle responds. Most that buy the cans(11oz) rather than the quarts(32oz) are using for a passenger vehicle rather than a work truck. A good indicator is simply watching your mpg's. Miles per gallon are a good indicator of how efficiently your vehicle is operating. If you start to notice a drop from what you used to get, its a good time to use the 245 to help clean the fuel system. Every 15k is somewhat of a guideline but if your using different stations and getting different quality fuel, you might find that adding a can sooner will benefit you. Every car/truck is operating under different conditions but you may consider adding a can with each oil change or every 6 months. Basically whatever you see giving you the best results for your vehicle.

bg 244 What is the difference?

245 is the newer version of bg's fuel system cleaner. It contains more detergents and is designed todays newer diesels that are equipped with dpf systems

I've used stanadyne in my duramax since day one. will using this increase my mpg & further clean injectors ? mileage is getting worse @ 66,000 mi.

This stuff cleans like crazy treat my diesel with it running out the tank before I change oil every 10k

Bg 245 Diesel Fuel System Cleaner 11oz

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Description

⛽ Clean fuel, peak power — don’t let your diesel fall behind!

TRUSTED QUALITY - BG brand with 4.5-star rating from 188+ users
PRECISION CLEANING - Removes deposits to ensure seamless fuel flow
COMPACT CONVENIENT - Sleek 11oz bottle fits easily in your maintenance kit
ENGINE POWER UNLEASHED - Restores lost horsepower with every use
FUEL EFFICIENCY REVIVED - One 11oz can treats 15 gallons for noticeable MPG boost

BG 245 Diesel Fuel System Cleaner is a premium 11oz additive designed to restore fuel efficiency and engine power by thoroughly cleaning diesel fuel systems. Trusted by professionals and backed by high user ratings, it effectively removes deposits to optimize performance and reduce emissions.

Specifications

ASIN	B01CVH396Q
Best Sellers Rank	#75,628 in Automotive ( See Top 100 in Automotive ) #309 in Oil & Fluid Additives
Brand	B&G
Customer Reviews	4.5 4.5 out of 5 stars (191)
Date First Available	29 April 2016
Item Weight	331 g
Item model number	245
Manufacturer	BG
Manufacturer Part Number	245
Product Dimensions	12.7 x 7.62 x 12.7 cm; 331 g

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