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Well I usually change out twice a year. I accumulate about 5-6k a year. Right now the mileage is at 36k Since the first oil change I have always used Mobil 1 5/30. However I do believe Mobil 1 has little Moly compared to say Havoline/Chevron. I don't mind changing oil more often...but I guess...

Any GM 4.3 owners out there who can suggest an oil for this engine? Synthetic or Conventional? Truck is 2003, automatic, ocassionaly tows (2-4 times a month) 1500#, South FL climate. Thanks!!

Dexron VI it is...Happy Thanksgiving..

Any other replies/opinions? Thanks!

I have an 03 V6 Silverado that does a fair amount of towing 1500#, on a regular basis. Which of the above fluids should I use? Thanks.

Thanks for the replies so far, I really appreciate the info. I would like to limit my choices though to the M-1 or the Chevron...due to availability & cost. Basically just want to know if the Chevron will provide the same amount of protection. Dickwells-is there a TSB on both issues you...

I have been using Mobil 1 since day 1, and right now I have 20K. I choose both of these oils because of availability, and then because of the price difference. Substantial savings in the Chevron @ 12.50 a case vs. the $23.00 for the mobil 1 6 Qts. Thanks for the inpit so far. Can anyone else...

Hello, I'd like to see what the forum would reccommend for my '03 Silverado V6. I've narrowed it down to Mobil 1 Syn. or Chevron Supreme(Non-Syn), both in 10W30. The engine is completely stock. I live in south florida and I'd like to keep the truck for atleast 10 years. I tow a small boat...

Where does the 4.3 Chevy Vortec stand?

I have been lurking for a while but this post encouraged me to be a part of the forum... Is it fair to say the better oil to use in the Chevy 4.3 is dino rather than synthetic? I have an '03 Silverado-Automatic that gets 40% Hwy and 60% city. I tow a small #1500 Boat, motor, trailer, about 4...