My 2014 Chevrolet Silverado has the 5.3 L83 engine and I use E85 exclusively. I am almost 2,000 miles into my OCI and the OLM is tracking precisely towards the 7,500 mile OCI that GM recommends.
Ford calls for a severe service OCI when using E85 (according to my previous 2009 FX4). GM doesn't even mention a shortened OCI (for any reason) anywhere that I have found yet for this engine. I thought that GM might have the PCM programmed to shorten the OCI with E85 usage and other factors but she is on track to hit 7,500 miles almost exactly at 0%.
I am running Mobil 1 EP 0w20 w/ Wix 57045 and am planning on an OCI at 3,000 just to see if the E85 is chewing up the oil and see if I have any dilution due to the direct injection.
Thoughts?
Ford calls for a severe service OCI when using E85 (according to my previous 2009 FX4). GM doesn't even mention a shortened OCI (for any reason) anywhere that I have found yet for this engine. I thought that GM might have the PCM programmed to shorten the OCI with E85 usage and other factors but she is on track to hit 7,500 miles almost exactly at 0%.
I am running Mobil 1 EP 0w20 w/ Wix 57045 and am planning on an OCI at 3,000 just to see if the E85 is chewing up the oil and see if I have any dilution due to the direct injection.
Thoughts?