GEO-TH, In
Member
Do you find using top tier gas your oil doesn't get dirty looking as fast? GM recommends changing oil every 6k.
- Thread starter GEO-TH, In
- Start date
Mutt and Jeff
Member
You are the only place I ever see or even hear of top tier.
I buy gasoline. 10% alcohol presumably.
I guess if you own a top tier branded vehicle it's important.
I use name brand gasoline. I use synthetic oils though. Cheap walmart full synthetic.
Change it once or twice a year and it will rust and become unsalvageable before it's tiers ever start showin.
I buy gasoline. 10% alcohol presumably.
I guess if you own a top tier branded vehicle it's important.
I use name brand gasoline. I use synthetic oils though. Cheap walmart full synthetic.
Change it once or twice a year and it will rust and become unsalvageable before it's tiers ever start showin.
If you can, talk to some guy$ in the shop about timing chain, ten$ioner, and cam pha$er failures and what they think of 6000 mile oil change$.
Just because the oil may not look "dirty" doesn't mean it is still doing it's best job of protecting those high-wear parts, apparently.
I agree that timing chain related repairs aren't cheap but I recently replaced a VVT solenoid in a Buick and as I recall the OEM part was only around $20 and the replacement took about 10 minutes (most of
which was taking the plastic cover and other things off the top of the engine so I could get at it). I replaced the other one too as long as I was in there.
which was taking the plastic cover and other things off the top of the engine so I could get at it). I replaced the other one too as long as I was in there.
Our car has a message center in the dash that says "oil change required". That message only comes on about 3700 - 4000 miles after a conventional oil change and 5-6000 miles after a synthetic oil change. It varies whether it is summer or winter driving. Most of our gas fill ups are regular gas not top tier gas. Using name brand synthetic oil not wally world.
No vehicle on the road knows what kind of oil is being used, they also have no idea on the actual condition of the oil.
Top tier fuel is becoming more important in modern vehicles for emissions and clean burning, this fuel is even more important on gasoline direct injection engines, which are gaining a lot of popularity.
Synthetic or blend oils are not only for extended drain intervals, they flow better at low temps, and offer better protection at high temps. They resist breakdown, oxidation and sludge a lot more than conventional oil. A lot of vehicles rely on oil not only for lubrication but for hydraulic control of variable valve timing and cylinder deactivation.
Top tier fuel is becoming more important in modern vehicles for emissions and clean burning, this fuel is even more important on gasoline direct injection engines, which are gaining a lot of popularity.
Synthetic or blend oils are not only for extended drain intervals, they flow better at low temps, and offer better protection at high temps. They resist breakdown, oxidation and sludge a lot more than conventional oil. A lot of vehicles rely on oil not only for lubrication but for hydraulic control of variable valve timing and cylinder deactivation.
Logan in S.E. Texas
Member
What is top tier fuel? I'm not familiar with that designation. We have 3 grades of gasoline here, all have 10% ethanol. I use Mobile 1 in my 3 GM half ton trucks and change oil at 7K milmiles. Two have 150Kplus miles. All are strictly hiway vehicles. I have had no problems.
Hobo,NC
Well-known Member
- Location
- Sanford, NC
I don't quite understand you statement.
If the oil is doing its job thru its normal service interval cycle it should be black when you drain it. If it looks clean its not doing its job unless its NG fueled...
I thought GM and most others were going by an oil change index computer ? Many times these would have lots of miles ( 10,000 even ) before the oil life was to the "change" point.
My Daughter had a Hundi Elantra with direct inject gas engine and those said to buy top tier gas too.
My Daughter had a Hundi Elantra with direct inject gas engine and those said to buy top tier gas too.
Given the fact I can change the oil in most of my vehicles for about $25 (or less) I really don't see the benefit in extending oil changes. Ford, GM, Fiat, and many others have learned that running dirty oil in a engine with variable valve timing is a recipe for disaster.
GEO-TH, In
Member
Mike, my dealer says 6k. I have it changed early because I plan to travel
BarnyardEngineering
Well-known Member
- Location
- Rochester, NY
"Top Tier" is a licensing scam that some clever middleman came up with. Here's how it works:
He pays vehicle manufacturers to put a requirement for "Top Tier" gasoline in their owner's manuals, and in turn he sells oil companies the right to market their gasoline as "Top Tier".
To make it "not a scam" in the eyes of the law, there are some technical requirements for the gasoline that may or may not be beneficial to your vehicle.
But in a nutshell, this guy literally owns the phrase "Top Tier," found a way to add value to it, and exploited it.
He pays vehicle manufacturers to put a requirement for "Top Tier" gasoline in their owner's manuals, and in turn he sells oil companies the right to market their gasoline as "Top Tier".
To make it "not a scam" in the eyes of the law, there are some technical requirements for the gasoline that may or may not be beneficial to your vehicle.
But in a nutshell, this guy literally owns the phrase "Top Tier," found a way to add value to it, and exploited it.
Geo-TH,In
Well-known Member
I know an engineer on RR that hauls gas from the Robinson, Ill
refinery. He asked worker at refinery, what's the difference
between minimum EPA gas requirements and Top Tier? Answer, top
tier has more detergents in it. Next question, Is there any
difference in the detergent added for Marathon, Shell or 66
gas? Answer, No, it all the same detergent as the detergent
used for minimum requirements just more. Now it's possible once
the fuel gets to the gas station, the top tier gas stations may
add more.
I asked the delivery truck to my local Marathon if he added
anything to the gas, NO!
I'm convinced it worth adding detergent to gas. My old 2007 GMC
with 100K doesn't use oil. I've been changing my own oil at 3K
and oil looked black. This time after using top tier gas, oil
looked good at 4k. I changed it a day before winter arrived.
My old 2005 buick, 100k and doesn't use oil, I didn't use top
tier gas in it and the oil looks very black at 2.5K. I might
save money if I took the oil out of my truck and put it in
buick. New twist on changing oil, from truck to car.
refinery. He asked worker at refinery, what's the difference
between minimum EPA gas requirements and Top Tier? Answer, top
tier has more detergents in it. Next question, Is there any
difference in the detergent added for Marathon, Shell or 66
gas? Answer, No, it all the same detergent as the detergent
used for minimum requirements just more. Now it's possible once
the fuel gets to the gas station, the top tier gas stations may
add more.
I asked the delivery truck to my local Marathon if he added
anything to the gas, NO!
I'm convinced it worth adding detergent to gas. My old 2007 GMC
with 100K doesn't use oil. I've been changing my own oil at 3K
and oil looked black. This time after using top tier gas, oil
looked good at 4k. I changed it a day before winter arrived.
My old 2005 buick, 100k and doesn't use oil, I didn't use top
tier gas in it and the oil looks very black at 2.5K. I might
save money if I took the oil out of my truck and put it in
buick. New twist on changing oil, from truck to car.
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