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PostPosted: Fri Sep 13, 2013 8:02 am 
Retired Admin/Techinfo Admin
Retired Admin/Techinfo Admin

Joined: Mon May 19, 2008 2:08 pm
Posts: 26005
Location: Space Coast, or at least it used to be
Year and Trim: 03 SLE, 95 SE, 95 TS SE
This list provided by wjcollier07 and 00Beast

00Beast wrote:

    1987-2005 Bonneville / Buick 3800 Maintenance List

    Run Seafoam, Chevron Techron or Gumout Regane through gasoline every 5,000 miles.

    Grease: Ball Joints, Tie Rods Every 8-10k ( Green Grease or Amsoil Grease recommended)
    Air Filter Every 15k (Amsoil EaA, Purolator PureONE)
    PCV Valve Every 30k
    MAF Sensor Element Cleaning/TB Cleaning Every 50k viewtopic.php?f=48&t=1661
    Fuel Filter Every 15-25k (Purolator, AC Delco, WIX) viewtopic.php?f=45&t=23215
    Spark Plugs Every 30-50k (NGK TR55 or Autolite 605) (Never Bosch)
    Ignition Wires Every 30-50k (Napa Belden, AC Delco, Autolite Pro, NGK) (Never Taylor or Bosch)
    Oil & Filter Every 5-6k or Every 6 months (Valvoline, Pennzoil Platinum or Amsoil)(Mobil1, Purolator PureONE, Amsoil EaO, K&N or WIX) (Never Fram) viewtopic.php?f=45&t=214
    *Conventional Oil Every 3k/3 months(Pennzoil with a WIX (Napa), Delco or Purolator filter)
    Tire Rotation Every 6-8,000 Miles
    Transmission Flush or Pan Drop Every 15-20k (Always make sure filter is changed when flushed) viewtopic.php?f=45&t=10193
    Cooling System Flush Every 25-50k or 3-5 Years (Peak or Prestone Mixes-With-Any Coolant Only) (Never Dexcool)
    Oxygen Sensor Every 80-100k (30k for non-heated) (AC Delco or Denso) (Absolutely never Bosch) viewtopic.php?f=48&t=794
    Accessory Belt Inspect every 15k, replace every 100k, or as needed
    Cabin Air Filter Inspect and Replace every 15k, or as needed in dusty conditions. (Note: 00+ Only) viewtopic.php?f=45&t=13626
    Evap Core Cleaning Whenever Needed (Note: 99 and older only) viewtopic.php?f=45&t=2432
    Brake Fluid Flush Every 75-100k, or 5 years
    Power Steering Fluid Replacement/Flush Every 100k or 5 years

    *Special Considerations*
    All 3800s, LG3, LN3, L27, L36, L26, L67 & L32, especially important on vehicles factory installed with orange Havoline Dexcool Antifreeze/Coolant:
    Lower Intake Manifold Gasket Replacement, every 80-100k (ignorance of this can allow coolant to enter your engine oil, this happening can cause irreversible lower engine damage, requiring replacement of subject engine)

    Series II, Naturally Aspirated, RPO:L36:
    Upper Intake Manifold Plenum Replacement, Every 80-100k (ignorance of this can allow coolant to enter your intake manifold, possible damage to occur can be hydrolock, irreversible damage to emissions devices, misfires, etc. Most times, engine replacement is required if ignored long enough.) viewtopic.php?f=53&t=1061

    Series I, II, III RPO Code L67 & L32:
    Change Supercharger Oil; Every 30-50k. (Intense Racing or GM Dealer) viewtopic.php?f=56&t=1690
    Supercharger Belt; Inspect Every 15k, Replace Every 100k or as needed.

1/30/2011 by 00Beast

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