Hello.
My buddy has the above mentioned non-turbo 6.5 diesel K2500. According the manual it specifies 15W-40 for year around use and if very cold in the winter then 5W-40 can be used.
Manual says the following:
"Chevrolet states that you should not use 10W-30, 10W-40 or 20W-50 oils in your 6.5 diesel engine."
I do not get why the 10W-40 could be harmful as they allow 5W-40. For him the year around use of 10W-40 HDEO would be optimum as that's what his other car uses.
Any ideas on the subject?
What about 5W-40 HDEO year around?
My buddy has the above mentioned non-turbo 6.5 diesel K2500. According the manual it specifies 15W-40 for year around use and if very cold in the winter then 5W-40 can be used.
Manual says the following:
"Chevrolet states that you should not use 10W-30, 10W-40 or 20W-50 oils in your 6.5 diesel engine."
I do not get why the 10W-40 could be harmful as they allow 5W-40. For him the year around use of 10W-40 HDEO would be optimum as that's what his other car uses.
Any ideas on the subject?
What about 5W-40 HDEO year around?