SR20DE Spark Plug

[lost_souljer]

Brief background - Had a service done a few months ago now, diff and gearbox oil, spark plugs and one of those fuel flush bottles. Since then im getting about 1-1.5k per ltr less than what i was getting before the service I waited for 3 tanks of gas to go through just to make sure that the flush was out and in case i got a bad batch of fuel but it's still not as economical as before. What plugs are the best for a S14 SR20DE? (more for economical driving right now) I dont have the old ones to find out what model they were since i got the shop to change them after i broke one of those el cheapo sparkplug tools trying to undo the last plug

Cheers Guys and Gals

[Mr Smith]

Spark plugs won't cause the milage reduction.

What could be causing the low economy is the oil they used. A lot of service stations just use a one size fits all generic 15w40 engine oil for general servicing. This type of oil is designed for older cars and comercial diesel vehicles. Using a high end synthetic 10w30 or 5w30 can make a big differance to overall fuel economy.

[lost_souljer]

Thanks, but i didnt get them to change the engine oil, i put some castrol GTX in it a bit before but thats the same stuff i normally use. Hmm ok might be time to try a new oil see if that helps. It does seem to be either running a bit richer or burning a tiny amout of oil judging from the stains that im starting to get on the rear bumper though. I might do a AFM clean this weekend, any other tips?

Cheers