|
I use opti-lube. Has nothing to do with cold weather though. If you read up on the lubricity requirements of (Bosch ?) high pressure fuel pumps, you will discover the fact that the fuel here in the USA does NOT meet their specs which is possibly why there are many reports of self destructing HPFP,s causing tens of thousands of $$ of repairs needed to the trucks this happens to.
I personally will do anything to prevent this from happening. Its cheap insurance.
|