Tune Up

[walktastic]

Since this is the first GMC Ive owned I was curious on what oil and spark plugs you guys use. i figured that oem stuff is the most reliable, but ive heard good things about red line oil. also, is there anything i should avoid

[Mikeee]

Welcome to the GMC side of the World.

 

Those 2 items have been much discussed here.

Have you tried the "Search" button?

May speed up the answers to your questions.

[Guest Riggs]

im going to do a tune up to my 97 GMC

 

im going to be changing...

 

Spark Plugs

Cap / Rotor

Spark Plug Wires

Fuel Filter

Muffler

 

Maybe Rear Diff Oil, to synthetic something

 

 

im hoping to gain about 1-1.5 MPG

[dlstewart01]

AC Delco plugs are good. The race type guys love Red line oil. It is a little pricy. If you stay with major brands you can't get a bad oil today. If you want synthetic Mobil 1, Pennzoil Platinum, German Castrol are all good. German castrol is 0W30 and can only be purchased at Auto Zone. It is a true synthetic and is the real deal. It is Castrol Syntec and will say European formula on the front of the bottle. On the back it will say made in Germany.

 

Good Luck,

 

Don

[walktastic]

the previous owner of the truck ran conventional owner and it has 150k miles. would switching to synthetic change anything?

[slimjim2525]

 

 

Since this is the first GMC Ive owned I was curious on what oil and spark plugs you guys use. i figured that oem stuff is the most reliable, but ive heard good things about red line oil. also, is there anything i should avoid

Stick with oem stuff for plugs. I use ac-delco filters, and valvoline 5w30 oil. I believe people have had some idle isues when trying to use the more exotic plugs.