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I've got a trip to north east pa scheduled for the next 2 weeks. The lows are in the -10 to -15f range. Ive got 10,000miles on the current batch of oil t-5. Do i need to change it to 5w40 for cold cranking reasons? vehicle is the one in my sig.

Ok, I have to ask.. Why is there so much bashing about the cleanable oil filters? I have searched the oil filter section and it mainly boils down to the micron rating.. or the lack there of. Now granted there are some that list 40um as there absolute. I have found that some oem filters list...

How could delvac 1300 have a cold temp useage down to -15f? That acording to mobil delvac is formulated for increased start up protection down to -15f. I had the understanding that all dino 15w40 oil's were aceptable down to 0f. If this is true then were getting in the cold neborhood of the...

Ok before I get flamed.. This is a question I can not seam to anwser. Why did the durmax suplement manual list 10w30 as an approved grade from 2001-2006 but not from 2007 on? I would have thought that it would be listed especialy since ford and cummains has 10w30 approved. Per gm they changed...

Why is it that m1 0w40 is on the approved list for bmw, mb etc for diesel use, but you can't use it in a powerstroke, durmax ect. Before everyone chimes in and says that it's not specked i know its not. I want to know why you can use it on some diesels and not on others.

I've been all over the rotella site looking for the hths ratings for the 3 main grades of hdeo. I've even looked at the voa area also with no luck. Can anyone anwser this question for me on triple t, t-5 and t-6. Thanks

I've got 2 gal of t-5 and 1/2 gal of delvac 15w40 from left over changes. What harm would it do if i mixed the two items together in my durmax? Would it make a heavy 30wt? I would hate to have two buy more oil since both are rated for my applaction. Does anyone see a problem with this?

I have a question concening mobil delvac 1300 15w40. With all the sub-zero weather in the south just how cold would it have to be before that weight would be to thick to use? On the mobil site it states a pumpability spec of -22f. Just how cold would it have to be before this oil is to thick...