4CN Air

iTrader: (7)

Not at handling heat as detailed above.


Yeah it sucks you can't find regular 15w-50 anymore, it's all "Extended Performance" and the price jumped another dollar. I'd pay the price but I'm afraid they've added additional additives and changed the formula for those that want it to last 15,000 miles. maybe this has made it a better oil all around or maybe it's given up some good characteristics just so it'll last longer. BTW: When I couldn't fidn the regular I bought a case of the Valvoline VR1 (what I used to use before diabling my OMP).

Idemitsu just shows that people still think "more expensive = better". The same applies for filters. There is absolutely no need to buy K&N or Mobil 1 filters. When you change your filter every 3k miles religiously they'll all handle the filtering abilities. The main feature to look for is an anti-drainback valve to prevent dry starts (because of our filters position). One of the cheapest ones I've found is a Purolator PURE1. Great filter and it's only $5 (plus it's a neat blue color )

rotaryrevolution

ive always just used either penzoil or valvoline 10w30 non synthetic...i was told that non synthetic was better for rotary engines and just kinda stayed w/ using it for the whole time ive owned the car. is this even remotely true? and how much better is synthetic over non-syn, is it even noticable?..

1QWIK7

iTrader: (33)

You know what? This is true for me from now on.

I used to be a diehard fan of castrol gtx. An oil that i been using in all my cars since the first car i owned. I lived by it. Well the new mobil 5000 oil that came out not too long ago, supposed to protect for 5000 miles guaranteed caught my attention. I decided to try it for the hell of it.

Well prior to mobil 1, when i still had castrol, my car would puff out some smoke upon initial startup for first 5-10 seconds (turbos prob on its way out, original 70k). I put in the mobil 5000 and no more startup smoke. I was a bit suprised so i did it again the next day and then the day after and each initial startup was smoke free. I was like wow, oil does make a difference.

dgeesaman

iTrader: (7)

This is OFF the subject of this thread.

Read the FAQ, there is a big synthetic/dino discussion linked in there.

Dave

impactwrench

Not rotary specific bu I bought a 93 Chevy S-10 brand new with the 4.3 in it. Broke it in on the factory oil for 500 miles. From then on it was Mobil 1 at 10,000 mile intervals. I sold it with 100,000 miles and at that time, it was only down 1 pint each oil change. Call bullshit all you want but it is a fact. Every oil change I was amazed by the cleanliness of drain oil and the amout left in the pan after 10,000 miles. Show me something that performs better than that and I'm in.

impactwrench

As for Castrol GTX, I am a John Force fan and if he was standing next to me while I was doing an oil change, I would still pour Mobil 1 in.

1QWIK7

iTrader: (33)

^^Yeah, they got me convinced.

I just did an oil change on my beater about a month ago, it has 172k miles. I used the castrol gtx high mileage. Every now and then upon initial startup, i get the blue smoke like on my FD, sometimes heavy, sometimes not and it lasts for about 10 seconds.

NOWWWW i will see the trueness about this mobil 1, cause next week, im gonna put that mobil 5000 also. I want to be truely convinced.

impactwrench

I can only go by experience. Most everything you here is propaganda. Dad had a ford 300 straight six which is supposed to run forever. He ran Amzoil in it and You would not believe the valvetrain damage at 60,000 miles. Mobil 1 is for real. All others will have to show me living proof other than "my friend says it's good".

hus

Castrol Syntec-Blend 10w-30

impactwrench

Another Force fan

hus

Come on now, I'm still on stock twins and Force couldn't catch my FD if I left the line with my parachute open

impactwrench

You have quite an imagination. John is the man. Even if he is endorsing the wrong oil.