- quality claim settlement for RME180 in respect of Viscosity at 50°C and at 100°C
- Oleksiy Gerasymenko
Lawndale Group S.A.
GMT 16:31
15th Apr 2008Dear Dr.Vis,
We got some quality claim from the customer who ordered "Ifo 180cst, rme 180, ISO 8217:2005(E)". After analysing sampel bottle for the delivered product, customer get back to us with a claim for viscosity.
Lab result mentioned following:
VISCOSITY ISO 3104 CST@50°C *206* 180 MAX
VISCOSITY ISO 3104 CST@100°C 23.8 25 MAX
As you see Viscosity at 50°C looks off-specs, however mentioned result for V at 100°C is within.
Do you think the product with the said results could be claimed? Appreciate your suggestions on that.
Thank you! - Dr. Ram Vis
Viswa Lab Corp.
GMT 18:47
15th Apr 2008
IP: x.x.203.241According to ISO 8217:2005, only viscosity at 50 degC is to be considered. Viscosity at 100 degC has been deleted from the standard. A single analysis result on 180 cSt can vary upto 187.9cSt. Beyond this from a commercial point of view, the fuel may be out of spec but this can be ascertained by testing in two labs. However from the technical point of view, a viscosity of 206 cSt will not affect the engine performance in any manner since this difference will make a very small difference at the injection viscosity (130 to 135 degC), it will perhaps make a difference of less than 1 cSt and usually engine makers use a range of injection viscosity from 10 to 15 cSt for main engines. - Many Thanks for your reply, Mr.Vis!
