Search results

  1. W

    Leave AFM Off or On? Really any difference in MPG?

    From my experience, AFM could save around 1~2 mpg on the highway (maybe slightly better in some conditions). The good thing about turning it off is it can make your engine more smooth. But since you're doing highway driving, AFM isn't that annoying and it would be probably better to turn it off.
  2. W

    Leave AFM Off or On? Really any difference in MPG?

    From my experience, AFM could save around 1~2 mpg on the highway (maybe slightly better in some conditions). The good thing about turning it off is it can make your engine more smooth. But since you're doing highway driving, AFM isn't that annoying and it would be probably better to turn it off.
  3. W

    Leave AFM Off or On? Really any difference in MPG?

    From my experience, AFM could save around 1~2 mpg on the highway (maybe slightly better in some conditions). The good thing about turning it off is it can make your engine more smooth. But since you're doing highway driving, AFM isn't that annoying and it would be probably better to turn it off.
  4. W

    Engine Rust 2019 RST

    This is normal IMO. Mine looks the same as yours.
  5. W

    Want some suggestions btn Borla and Magnaflow muffler

    Thank you all for suggestions. But has anyone tried the Borla ProXS muffler? The sound of Borla Touring exhaust is pretty nice, but the price is a little bit too high (I mean, compared to only the muffler). Not sure if ProXS with stock resonator would be similar to Borla Touring.
  6. W

    Want some suggestions btn Borla and Magnaflow muffler

    Hi! I have a 2016 Tahoe LT and recently want to change the muffler on this truck. I noticed a lot of you guys have recommended the Magnaflow 12259. However, I noticed there's also a Borla Pro XS 400482, which also seems to work and it has better material (304). The price of these two are...
  7. W

    Questions about Brake fluid.

    In my owner's manual, the brake fluid needs to be changed every 45000mi. I'm not sure what will happen if you didn't change it since I've seen people didn't change it for a lot of years and every thing's fine...But I think you'd better change it regularly.
  8. W

    Questions about Brake fluid.

    Very appreciated for your reply. Have you taken the wheels off to do the flush?
  9. W

    Questions about Brake fluid.

    I notice there are some DOT4 Low Viscosity brake fluids, which have a lower viscosity than many DOT3 fluids. Will they cause any problems to the vehicle? Is there anyone could help me with this? I'd be very appreciated.
  10. W

    2018 Tahoe 5.3l - Gas question

    What I'm currently using is Premium gas from Costco. Costco near my home only has 93 and 87. But the price of 93 is almost equal to the price of 89 in other gas station. I've also run on 89 before running on 93 and there's nothing wrong with it. Also, there's a study conducted by AAA that the...
  11. W

    Questions about Brake fluid.

    Recently I plan to change the brake fluid in my 2016 Tahoe, with 52000+mi. In the manual, it says I could only use DOT3 fluids. But could I use DOT4? I’m considering using Valvoline DOT3&4, has anyone tried that yet?

Forum statistics

Threads
129,197
Posts
1,812,002
Members
92,297
Latest member
btheboyscout

Latest posts

Top