Edited April 28, 2011 by Dave4x4 learned some more about Dexos oil tonight by listening to another podcast of the local weekend auto show. For that they say to use … 15W-40. Upon checking, there was no oil on the dip stick. It all started with a check engine light, a week ago Monday , I was 300 miles from a regularly scheduled oil change so I had the wife take it to the dealership. I would stick with 5w30 year around maybe even 0w30 winter only but not 10w30. I've researched them since, and have learned that they're made by Wix, and are a lot better than the crap that the quicky oil change places use or what the dealer uses, and are relatively cheap to buy. Say the certification is a million bucks; A million bucks for companies that make billions is nothing.
A lot of manufacturers just do this so that the back end isn't scraping on the ground when the payload is maxed. Summer travels can also include several 3+ hour road trips up north, idling in traffic and highway use. I am heartsick over this. Here it goes, opening another can of worms. You gotta use it in the 11 and newer vehicles or else they can deny warranty. It's just a cost thing right now, that's all.
The conversation ended very shortly after that because I asked questions that she could not answer… I went down to the dealership a couple days ago to talk tobthem about the repairs to fully understand the repairs. I know there are bulletins out for a tear down of engine for rings, lifters, valve covers pistons etc. Why are you opposed to syn? Ive always used synthetic oil in my trucks. I have always been a Chevy truck owner and I rely on my trucks. This is true for all the engine options thatyear except the 6.
Sorry, this is probably a already discussed a million times but thanks in advance. With today's oils I would go back and forth with no worry. Freedom is not having the choice to do what you want, but the choice to do what you ought. Not helpful to your question, but couldn't help but notice the reference to synthetic cost. That's one great thing Synthetic oil has going for it.
In other words, stick to the 5w30. Engine oils meeting the requirements for the vehicle should have the dexos1 approved certification mark. I'll need to find the info and forward on. Supposed to be good for 15k miles obviously not in every situation. Most half-tons nowadays rank in the 1500-2000lbs range.
Now I don't know what is going on but after 32,000 miles that seems odd. Why are you opposed to syn? In other words, stick to the 5w30. Sorry, this is probably a already discussed a million times but thanks in advance. This truck is going thru 1 to1 and a half quarts of the great dexos oil about every thousand miles!!! Reset my oil life and now coming up on 11000 and almost time to change again and will use mobil 1 again. That will depend on which Tranny you have there were 2 see links below. This certification costs a lot of money, and while easy for someone like Shell, or Pennzoil who are main stream oil companies, royal purple, and Amsoil are a pretty niche market. Which is the best way to go? Thank God I kept my 1995 Silverado! Took it to dealership to have them look at it.
I've researched them since, and have learned that they're made by Wix, and are a lot better than the crap that the quicky oil change places use or what the dealer uses, and are relatively cheap to buy. I do tow a travel trailer periodically. Considering that I would have to buy 30 quarts of regular oil and 5 filters during that same 15k miles, it totally makes sense for me. Stick with your 5w-30, I wouldn't veer from the manufacturers recommendations. I have worked hard all my life for everything I have, and this was going to bethe last truck I owned? I'll get the info posted on here when I have some more time this weekend.
I have never tried synthetic in any vehicle I have owned, is it true, once you have run it through your motor you should not go back to conventional? I checked the oil this weekend and I had to add 2. I'm assuming you've got a gasoline motor so you'll need to meet the dexos1 spec. I've just purchased a new silverado and I want to make sure Im putting good oil in it from the start. All totaling, she weighs in at about 6,800 lbs, or 3. I have a '95 Silverado Z-71 Off Road, and Z-71 packages were, among other things, equipped with a massive drive-train for the four-wheel-drive. The curb weight was around 4200-4500lbs.