LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

changing oil every 4000 miles with semi synthetic??

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Old 02-10-2003, 04:19 PM
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changing oil every 4000 miles with semi synthetic??

can i change the oil every 4000 miles...i'm using a semi synthetic oil....and i have 120K on the engine
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Old 02-10-2003, 04:27 PM
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Some of the newer cars come with 3750 intervals now. But, with an oil change costing me around $20 its not alot of money savings waiting another 1k miles, so its up to you.

I pay $2.25qt for QS Semi Synth.
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Old 02-10-2003, 06:07 PM
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Originally posted by Dr.Mudge
Some of the newer cars come with 3750 intervals now. But, with an oil change costing me around $20 its not alot of money savings waiting another 1k miles, so its up to you.

I pay $2.25qt for QS Semi Synth.
hmm i pay about $1.89 for valvoline semi-syn oil....ok, change oil every 3k then
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Old 02-10-2003, 07:16 PM
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Most semi synthetic oils out there aren't even synthetic at all, they use 10% group 3 petroleum base oil. Mobil's semi synthetic is a true synthetic, but still only uses 10% PAO base oil.

The semi synthetic I run is called Schaeffer Supreme and it's about 20-25% synthetic and has proven itself to be a very long drain oil. I've seen results with this oil going beyond 10,000 miles. I ran my last interval to 4300 miles and the guy who analyzes my oil reports said to try 8000 miles on the next interval. This oil is only about $3 per quart, but yet it ranks right up there with the best full synthetics.
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Old 02-10-2003, 07:37 PM
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Originally posted by Patman
Most semi synthetic oils out there aren't even synthetic at all, they use 10% group 3 petroleum base oil. Mobil's semi synthetic is a true synthetic, but still only uses 10% PAO base oil.

The semi synthetic I run is called Schaeffer Supreme and it's about 20-25% synthetic and has proven itself to be a very long drain oil. I've seen results with this oil going beyond 10,000 miles. I ran my last interval to 4300 miles and the guy who analyzes my oil reports said to try 8000 miles on the next interval. This oil is only about $3 per quart, but yet it ranks right up there with the best full synthetics.
and where can i get this kind of oil??
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Old 02-11-2003, 05:37 AM
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If you can't find Schaeffer oil in your town, send an email here to find out who your local rep is:

schaeffersoil@yahoo.com
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Old 02-11-2003, 10:10 AM
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Originally posted by Patman
If you can't find Schaeffer oil in your town, send an email here to find out who your local rep is:

schaeffersoil@yahoo.com
cool...thanks patman
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