Chevy and GMC Duramax Diesel Forum banner

synthetic oil

  1. Where to find Amsoil filters and oil at fair prices.

    04.5-05 LLY Duramax Powertrain
    I have spent hours today reading the thoughts on these forums about switching to and using amsoil and have been swayed to start using. Now I need to find out where to get the oil and filters. I would like my 05 Duramax to last quite a bit longer, even though I am having a hard time fighting the...