[KONY]

I'm curious what's everyone opinion is on this. Ive heard so much stuff over the years.... finally we got a newer car with under 60k miles. Thinking about going with synthetic oil next change, although it only requires oil changes every 5k miles with conventional oil.

[Pinball Wizard]

I've used nothing but synthetic oil since 1978.

If you are going to keep a vehicle, many years?...it's a good move.

(I change the oil & filter once a year)

[paladin420]

Big fan!! I credit it with savin a motor one below zero mornin when my foot slipped off the clutch while the the choke had the engine racing..

[Sgt.Stedenko]

I only use synthetic. 5K between changes.
If you car has a turbo, it's almost a requirement.

[LovableHuggable]

I'm using Pennzoil Platinum in my civic now. I acquired it at 20k miles and I've put 15k miles and I'm on change 2. I ran the gold bottle Castrol Edge for 10k miles last time and it was still caramel colored when I drained it. That's not a good indicator of oil quality but it does show how clean your engine is burning.

You can send your oil off to Blackstone labs or dyson labs and they will tell you how long you can take it. A guy on 8th gen civic has a 2006 civic with over 600k miles and he uses Mobil 1 EP for 20k mile changes. Bobistheoilguy is a great forum to read on this stuff.

Synthetic is the way to go imo. I'm going to run this Pennzoil out to 8500-10k miles and send it off to Blackstone. I'm almost sure I can go even further as most people with my car and driving style are getting 15-18k miles b/t changes when they do an analysis but I'm not comfortable doing so without a few lab results.

[Phillthy]

swear by it. run it in all my cars. used it in 500+ horsepower strip cars. cars with nitrous, superchargers, turbos, etc... gone 200k + hard ass miles on some with not so much as a puff of smoke from the tailpipes. you invest so much into a vehicle that a few extra bucks for the synth is like insurance for under the hood.

[Sour Deez]

questions for you guys...

I heard you shouldnt switch between conventional and synthetic, true?

If your car has 200k, is there any reason to switch to synthetic, or stick to what got you to 200k?

[LovableHuggable]

Only time I think synthetic vs conventional matters is in air cooled engines like old VW Beetles.

[PorkSword]

I run synthetic in all my trannys, transfercases and axles. I haven't had a new enough rig to justify doing it to the engine although I know I should. I will when I get the 4.6l stroker built.

My cousin runs amsoil and does yearly changes. Im not that brave.

[Snagglepuss]

sythetic is great ,just don't use it if your switching and have an existing oil leak...it makes them worse...and whatever ya do ...don't use quakerstate oil ...worst oil protection ive ever seen after teardown and inspection......If you have an older car or vehicle ..I like to run 20w50w its real thick and offers great protection for older vehicles....Also 1/2 quart of dextron automatic transmission fluid added to a full tank of gas ,will clean the pistons/carburator/F..Injection...