synthetic blend VS. good quality regular oil?

[BlazinUP]

im just about to do an oil change on my 93 s10 4.3/w.
i was wondering....is it worth it to use a synth blend....?
or is good quality regular oil just about the same for a few bucks less.
any thought?

[OverBoardProject]

I personally feel that Synthetic Blend oil is better. I ran it in a very high performance motorbike with a 15,000 rpm red line, and when it came time for the tune-up nothing needed adjusting (and the valves usually really need re-adjusting by that point).

[BlazinUP]

so if i switch to the blend....do i need to do a flush first?

[OverBoardProject]

You should really read Oil on this forum and then decide weather to flush the system

http://www.automotiveforums.com/vbul...0&goto=newpost

[not_mine]

I ran Royal Purple in my truck for most of it's life. On horsepower TV they took a camaro and changed all the fluids to synthetic and gain 15 horses! Not bad for just changing fluids.

[OverBoardProject]

15 hp you say? Well if they actually ran it on the dino I believe it, although to me it seems rather high. I'd expect 1-3hp gain

[BlazinUP]

id go full synth...but i heard trucks with my kind of mileage are prone to leaking.....so im just gonna go with a blend :/
as for 15hp increase.,.that sounds a lil unreal......but what do i know :P

[OverBoardProject]

Seriously check out this site, several of us have made the switch to full synthetic with high milage engines without a problem.

http://www.automotiveforums.com/vbu...90&goto=newpost

[BlazerLT]

Originally Posted by BlazinUP

im just about to do an oil change on my 93 s10 4.3/w.
i was wondering....is it worth it to use a synth blend....?
or is good quality regular oil just about the same for a few bucks less.
any thought?

How many miles on the engine?

[vtmecheng]

If you have a lot of miles on the engine (60000+) on mineral oil (regular oil) then you should really stick with what you use. Changing oil that late in the game really isn't good for an engine, while you may only loose a few thousand miles of life in the long run. An engine gets used to one kind of oil, and switching back and forth will cause multiple wear patterns to form. If you really really want to switch, just go to a blend. Just remember that with synthetics the brand is even more important.

[BlazerLT]

Originally Posted by vtmecheng

If you have a lot of miles on the engine (60000+) on mineral oil (regular oil) then you should really stick with what you use. Changing oil that late in the game really isn't good for an engine, while you may only loose a few thousand miles of life in the long run. An engine gets used to one kind of oil, and switching back and forth will cause multiple wear patterns to form. If you really really want to switch, just go to a blend. Just remember that with synthetics the brand is even more important.

Sorry bro, you are rehashing myths that has been pushed around shops for way to long.

Synthetic can be changed at any time if you have no leaks in the first place. I myself had 125,000 on the odometer and I changed and everything was as smooth as butter.

For true synthetic, go with Mobil 1.

[BlazinUP]

i have 140k on the 4.3 W...........LT.
castrol synth any good? or just the moble 1?

[BlazerLT]

I too used Castrol Syntec only to find out that it is not true synthetic by a hydrocracked conventional oil basestock which can be certified as synthetic in todays market which is just wrong.

Only true PAO based synthetics are Mobil 1, Amsoil and Redline.

All the rest are the hydrocracked conventional and labeled as a Group III synthetic which is again, not true synthetic.

[not_mine]

Originally Posted by BlazerLT

I too used Castrol Syntec only to find out that it is not true synthetic by a hydrocracked conventional oil basestock which can be certified as synthetic in todays market which is just wrong.

Only true PAO based synthetics are Mobil 1, Amsoil and Redline.

All the rest are the hydrocracked conventional and labeled as a Group III synthetic which is again, not true synthetic.

Don't forget Royal Purple! Good stuff! But if your wallet isn't that deep then go with Mobil 1

[BlazerLT]

Nope, Royal Purple is a Group III syntheic and is NOT a true synthetic.