elkassassin
Long Time Member
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15W-40 Heavy Duty Diesel Engine Oil Is Perty Damn Thick/Like Tar at -20 Below & Colder!
Manufacturer is Recommending 15W-40 in the Summer Time & 5W-40 in the Colder Winter Time!
About the Only Brand That I Can Find that Offers Both Weights is the Shell Rotella T6 in Full Synthetic! (Both Being Full Synthetic!)
I Normally Don't Use Full Synthetic Oils!
But I Will if that's the only Choice without getting real Spendy!
I Have Run alot of Synthetic Blend Oils & Have Had Good Luck with them! (But I Don't see a Synthetic Blend that's offered in Both Weights in the Same Brand other than the Shell Rotells T6!)
I Don't See Where CHEVRON DELO/DELVAC/Or others Offer Both Weights in the Same Brand and Same 'FULL SYNTHETIC' or 'SYNTHETIC BLEND' other than the Shell Rotella T6 Full Synthetic!
If I Do Go With the SHELL ROTELLA Full Synthetic I'll Still Be Doing Oil Changes every 3,000 Miles!
I'm Not a Believer in them 7,500,10,000 or 12,000 Mile Oil Changes!
Your Thoughts?
Manufacturer is Recommending 15W-40 in the Summer Time & 5W-40 in the Colder Winter Time!
About the Only Brand That I Can Find that Offers Both Weights is the Shell Rotella T6 in Full Synthetic! (Both Being Full Synthetic!)
I Normally Don't Use Full Synthetic Oils!
But I Will if that's the only Choice without getting real Spendy!
I Have Run alot of Synthetic Blend Oils & Have Had Good Luck with them! (But I Don't see a Synthetic Blend that's offered in Both Weights in the Same Brand other than the Shell Rotells T6!)
I Don't See Where CHEVRON DELO/DELVAC/Or others Offer Both Weights in the Same Brand and Same 'FULL SYNTHETIC' or 'SYNTHETIC BLEND' other than the Shell Rotella T6 Full Synthetic!
If I Do Go With the SHELL ROTELLA Full Synthetic I'll Still Be Doing Oil Changes every 3,000 Miles!
I'm Not a Believer in them 7,500,10,000 or 12,000 Mile Oil Changes!
Your Thoughts?