โNov-27-2020 08:13 AM
โJan-07-2021 08:54 AM
โDec-27-2020 03:52 PM
โDec-27-2020 08:24 AM
Frank55 wrote:
I bought the cheap stuff...once...check engine light came on, said it was a DEF issue. Used the Blue, after about 2-3 tanks of fuel, the CEL went away, no problems in 50,000 miles.
โDec-27-2020 06:27 AM
โDec-25-2020 05:58 PM
2oldman wrote:
Blue is fine for pulling a 5th wheel.
โDec-23-2020 05:02 AM
โDec-22-2020 08:40 PM
sayoung wrote:
LOL, 3 pages discussing chicken whiz. For the experts, do you get better def from a Rhode Island Red , a Plymouth Rock , or a Leghorn ?
โDec-22-2020 06:20 PM
โDec-22-2020 08:53 AM
โDec-21-2020 08:11 AM
rhagfo wrote:Lynnmor wrote:
DEF is DEF, buy whatever has the lowest price. I do have concerns with dirty nozzles at truck stops, but many use it with no problems. Walmart most likely has the best price on their own brand.agesilaus wrote:
As noted DEF is DEF is DEF. It is all the same, save yourself some money and buy the $7 stuff from Walmart.
So you are both certified chemist that have tested all brands of DEF on all counts including purity.
The effects of less pure DEF likely will not appear right away, the same as using cheap engine oil will only build sludge which leads to issues down the road.
As often as I need to add DEF I will use a brand name.
โDec-19-2020 03:41 PM
2oldman wrote:
Blue is fine for pulling a 5th wheel.
โDec-16-2020 10:17 AM
โDec-12-2020 03:33 AM
NRALIFR wrote:rhagfo wrote:Lynnmor wrote:
DEF is DEF, buy whatever has the lowest price. I do have concerns with dirty nozzles at truck stops, but many use it with no problems. Walmart most likely has the best price on their own brand.agesilaus wrote:
As noted DEF is DEF is DEF. It is all the same, save yourself some money and buy the $7 stuff from Walmart.
So you are both certified chemist that have tested all brands of DEF on all counts including purity.
The effects of less pure DEF likely will not appear right away, the same as using cheap engine oil will only build sludge which leads to issues down the road.
As often as I need to add DEF I will use a brand name.
Iโm not a chemist, but I have a DEF refractometer and use it to check the DEF that I buy in jugs, and keep at home. Cheap DEF, expensive DEF, new DEF, old DEF, BlueDEF or Supertech DEF, if the refractometer says the urea is 32.5%, it will do itโs job in your exhaust system. DEF doesnโt get used in, burned by, consumed by, or run through the engine, so you donโt have to worry about any sludge buildup there.
Because DEF is a legally required pollution control fluid used in literally millions and millions of Diesel engines, the urea used to produce DEF is already extremely pure, pharmaceutical grade. The only other substance in DEF is deionized water.
Diesel Exhaust Fluid doesnโt degrade nearly as quickly as people assume. For example, at 86ยฐF, DEF has a shelf life of a year. BUT REMEMBER: Donโt equate shelf life to spoiling like food, as DEF will not โgo badโ. It will lose some effectiveness, and the SCR will dose at a higher rate, but it wonโt โgo bad.โ If maintained at a constant temperature, DEF manages to stay for several months. For example, at 74ยฐF Diesel Exhaust Fluid has the shelf life of 44 months.
My garage supply cabinets get zero sunlight, and rarely if ever exceed 85 degrees. I donโt stockpile it, but Iโve usually got a 2.5 gallon box or jug of it my garage. I make note of the date code on it when I buy it. Itโs always used up in less than a year.
When my truck says the DEF tank is less than 1/2 full, I pour in 2.5 gallons when I get home, and buy a new jug the next time Iโm able. If weโre on a long trip and it gets under 1/2 full, the next time I need to stop at a Walmart I buy a jug or box and dump it in. I have never used the bulk pumps because thereโs never a convenient one when I need it. Iโm not driving miles out of my way to buy such a low usage item in order to save what? About a dollar a gallon?
Finally, ONLY product that adheres to the ISO 22241 specification and is licensed with the API can be called Diesel Exhaust Fluidโฆall other products are simply Urea Solutions to various concentrations and cannot be called Diesel Exhaust Fluid.
:):)
โDec-11-2020 08:33 AM
rhagfo wrote:Lynnmor wrote:
DEF is DEF, buy whatever has the lowest price. I do have concerns with dirty nozzles at truck stops, but many use it with no problems. Walmart most likely has the best price on their own brand.agesilaus wrote:
As noted DEF is DEF is DEF. It is all the same, save yourself some money and buy the $7 stuff from Walmart.
So you are both certified chemist that have tested all brands of DEF on all counts including purity.
The effects of less pure DEF likely will not appear right away, the same as using cheap engine oil will only build sludge which leads to issues down the road.
As often as I need to add DEF I will use a brand name.