Originally Posted By: Kuato
Originally Posted By: GM4LIFE
Originally Posted By: Kuato
Originally Posted By: GM4LIFE
Running Mobil 1 5W30 now, but engine valvetrain is noisy particularly at idle.
What 5W30 synthetic oil will make this engine quieter?
Any recommendations on the GM LSA V8? I got 6,200 miles on it now and have changed the oil twice already, both times with Mobil 1 5W30 from the factory fill.
Thanks in advance for any info or suggestions.
Our Wrangler is super noisy with M1, and is nearly silent with Amsoil in the sump - all you hear are the accessories turning.
I was going to go with Amsoil Signature Series 0W30 or 5W30 in this car, but a few members here warned me that Amsoil is not Dexos 1 approved. If there are any issues down the road, my warranty with GM would be compromised even though I have never heard of any oil related failures with Amsoil or any other major synthetic oil brand.
I have used Amsoil 0W30 primarily in the past and have never had any issues with it. I have had the same type of car (2nd gen CTS-V) with the same type engine (GM LSA) but I honestly couldn't really tell the difference between Mobil 1 and Amsoil in the way the car idled or performed overall. Amsoil also isn't the easiest to get or the cheapest either, but cost to me isn't a factor. It's more convenience more than anything. Mobil 1 has also been proven for over 40 years now and is the factory fill with more automakers than any other oil. I have never heard of any oil related failures with Mobil 1 either. I have been using Mobil 1 since 1995 and went to Amsoil for a couple years, but always seemed to come back to Mobil 1 because it's so [censored] easy to get at Walmart and Costco.
I hear ya. M1 is a great oil, but it's well documented to be noisy. I'd be surprised if Amsoil didn't meet the GM specifications...never seen a bad test of any kind with SS.
M1 is also well documented by many of us here at BITOG and many folks that I know to produce very quite engines. As for test, aren't you speaking of the test that Amsoil runs themselves, comparing Amsoil to other brands that they call out by name? Just askin.