Recent content by TexasForever

Yes, is the exterior. This corrosion associated at the coolant was done by the mechanics. Not leaking. Appears corroded externally, we will check this, thanks for for your help.

G11 was designed typically for inorganic corrosion inhibitors in green color. This product appears to maintain some inorganic corrosion inhibitors based, despite of content carboxilic acids OAT: low silicate content is required for this type of fluid. G12 does nor contain silicate.

Hi, the coolant used by this new Scania radiator with 50K miles, is an N-OAT coolant. The fluid recommended is an hybrid Si-OAT. Ok, this was not the fluid in this radiator, however this is not the reason, why the radiator can present this type of corrosion?. Glycol is at45% and contains the...

My location is a middle temperature wheather, no problem with the SAE grade. I´m asking your support about the viscosity modifier as part of the composition of these multigrade oils. Sloinker commented about no use of (VM) vicosity modifiers if an ester ois or simmilar is uses. However we need...

Motor cycles engines has a higher RPM compared with automobile engines and other typical differences. No matter about them. My concern is about the SSI (Shear Stability Index) for the engine oils for this type of 4t engines. 4t 10W-30 engine oil requires a VM, how to select the more adequated...

Thanks to all for your comments. Effectively it is an obsolete API category, but some countries out of America are still manufacturing. i.e. Castrol Viscus SAE 25W-60 API CF-4. However if bullwinkle says that in the past Chevron had an API CF-4 for a monograde product, this means that API...

API CF-4 was developed for multigrade products. Is this correct? Can a monograde product has the claim CF-4. i.e. XXX product SAE 40 or SAE 50 API CF-4? Could be, if the treatment is for CF-4 no matter if is monograde or multigrade?