Originally Posted by gtrplr71
Originally Posted by Railrust
Well I'd say RGT is a typical synthetic, should be capable of 5,000 - 7,500 mile intervals. I have seen a guy on youtube do a 12,000 mile interval with it, with a lab report sample saying he could have gone to 14,000 miles.
I've been using it for almost a year now - I do 5k mile intervals on my 5.3 2018 Silverado - using the required 0w20. Haven't had an issue yet. Like the oil...seems quieter, use less between intervals.
I have the 4.8 V8. I have mine set for 7500 and then do an analysis on it. I was using Penz. Ultra premium at 10K and it had a fairly clean apperance at the drain. So I figured 7500 would be safe. I do tow quite a bit and 95% of the miles I put on her are interstate miles. But I agree drove 100 miles yesterday and it did seem guite a bit quieter even towing .
I think 7,500 miles should be fine.
Make sure you send away for the rebate, because they are excellent with getting that rebate check to you. They ran their rebate all of last year and they are doing it again this year.