L83 vs L86 intake, does anyone have dimensions/dyno info?
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R&P isn't an additive. It's an oil to help clean old engines so they have a chance of lasting longer. That's like when people say SuperTech is bad when I've used it for years and never had an issue or people who think paying $100 for Amsoil is the best thing to do. Mic Drop. Whatever TF that meant. 🤣 You're that one AHole that has to be correct about sh*t they know nothing about. -
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By Grumpy Bear · Posted
Hormuz has them confused around here. Some stations down twenty cent and other up that amount. -
By Grumpy Bear · Posted
If you have to move from your regular oil to an HM oil then your regular oil didn't get it done. If you have to clean out your motor with such products as R&P or AutoRx then your regular oil didn't get it done. Period, Full Stop, drop the Mic!! -
2024 GMC Sierra 2500 HD, 6.6L L8T gas, Allison 10-speed. Currently about 30,000 miles. Truck has had an easy life. I’ve towed maybe a couple hundred miles total since new. No heavy towing yet. On the highway it suddenly bucked hard, then immediately downshifted and stayed in 2nd. Felt like I slammed on the brakes with traffic behind me. I had to limp it at about 45 mph at 4500 rpm to the nearest exit. Transmission temp climbed quickly to 190°F before I shut it off, which is the hottest I’ve ever seen it (still not that hot). This was the first time the check engine light came on. After restarting it, I drove it about an hour to the dealer afterward taking only backroads. Dealer says they don’t know what’s wrong and that all the codes are historical. One of the techs looked at it while I was grabbing my stuff and said “this ain’t good.” They’re doing a test drive tonight and said they’ll consult their technical specialist. Has anyone else had this on a low-mileage L8T / 10L1000? Did GM actually fix it with the valve body TSB? Considering it was driving absolutely fine when this happened, I really don't trust the truck and its looking like the dealer isn't going to do anything about it. -
Nice! What made you want to trade up your '25? with the 3.0 for a new one? (As I look suspiciously at mine...)
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