Gas mileage decreasing?
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From: College Station/La Porte, TX
Will they reach my long tubes like the boschs?
No my car weight is about stock, no added weight lol. And yes I have about 35 psi all the way around.
I haven't noticed any uneven tire wear or abnormal handling/riding so I think I should be ok there.
Thanks again for all the input!
I haven't noticed any uneven tire wear or abnormal handling/riding so I think I should be ok there.
Thanks again for all the input!
Oh well it was always my understanding that most stations got there gas from the same place anyways. The top tier thing is interesting, might be something to consider. But really the only reason I get exxon gas is becasue my dad works for exxonmobil and we get a discount on gas. I will try another station on the next tank to see what happens.
I would also make sure you clean your MAF because you are oiling your air filter way too much! If your MAF gets fouled with oil, the PCM will sense less air going in to the engine and will change your fuel mixture accordingly. (GM says these filters foul the MAFs - the filter manufacturers say the MAFs are defective and leak silicone. From what I've seen on my car, there may be some truth to both claims - depending on the situation.)
Check your manufacturer's instructions on the air filter. If I recall correctly, they work better when they get "dirty" and clump dirt on to the oil. All that is needed for normal cleaning is to shake the clumps off. (I believe my old K&N recommended re-oilings at intervals over 50,000 miles.) If your filter is "clean" and wet with oil that often, you could be sheading enough on your MAF to cause a problem.
Thread Starter
TECH Enthusiast
iTrader: (6)
Joined: Oct 2005
Posts: 669
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From: College Station/La Porte, TX
Yea - Its not the gas itself. Its the amount of detergent added to the mix downstream. I too am a loyal SpeedPass holder and have close friends who work for the company - but I do make sure I get a few strings of Top Tier in the tank every so often to help keep things clean.
I would also make sure you clean your MAF because you are oiling your air filter way too much! If your MAF gets fouled with oil, the PCM will sense less air going in to the engine and will change your fuel mixture accordingly. (GM says these filters foul the MAFs - the filter manufacturers say the MAFs are defective and leak silicone. From what I've seen on my car, there may be some truth to both claims - depending on the situation.)
Check your manufacturer's instructions on the air filter. If I recall correctly, they work better when they get "dirty" and clump dirt on to the oil. All that is needed for normal cleaning is to shake the clumps off. (I believe my old K&N recommended re-oilings at intervals over 50,000 miles.) If your filter is "clean" and wet with oil that often, you could be sheading enough on your MAF to cause a problem.
I would also make sure you clean your MAF because you are oiling your air filter way too much! If your MAF gets fouled with oil, the PCM will sense less air going in to the engine and will change your fuel mixture accordingly. (GM says these filters foul the MAFs - the filter manufacturers say the MAFs are defective and leak silicone. From what I've seen on my car, there may be some truth to both claims - depending on the situation.)
Check your manufacturer's instructions on the air filter. If I recall correctly, they work better when they get "dirty" and clump dirt on to the oil. All that is needed for normal cleaning is to shake the clumps off. (I believe my old K&N recommended re-oilings at intervals over 50,000 miles.) If your filter is "clean" and wet with oil that often, you could be sheading enough on your MAF to cause a problem.
I do make it a habit to clean my MAF often though just for that reason. Also, you are right the filter is supposed to only be re-oiled once every 30k miles or so but still Im kind of **** when it comes to dirty filters lol. I kinda regret the free ram air mod now haha.
