Hey,
Since its almost 80 degrees out during the day right now, I am interested in knowing what you folks would recommend for a 7.3 that has Rotella 5W40 Synthetic in it now. I NEED this oil during winter up here, and I am not really interested in switching from synthetic back to normal back to synthetic ad infinitum. That said am I ok running my 5W40 synthetic rotella year round or should I try to find a 15W40 synthetic for summer, and if so what one have folks here found that is diesel rated?
By the way, a RECORD high around here would be around 90°F
Thanks