lleroyb

I keep hearing Mobil 1 15w-50 is not what is once was. Why do people think so? I was just comparing it with Castrol 5w-50 and they both have all the same certifications. What is up?

Lou

code5coupe

Oils that meet the same specs are so close in performance that it really doesn't matter which one you go with.

Larry

Ski

BS, tell this to me and the countless others who have had minor leaks using Mobil 1 since the merger of Exxon and Mobil. The ones that have switched away from Mobil have no leaks now, including me and that's on a full time track car also.

lleroyb

I am not worried about the Mobil 1 causing leaks, I am worried about longevity of the engine. Has the lubricating performance diminished since the merger?

Lou

LFA951

Both these oils suck, Amsoil Series 2000 20W50, enough said!

Ski

Well if it's so thin that it's leaking out the seals, on new seals, how well do you think it's protecting your engine? I think Mobil 1 has gone down since the merger.

It's your engine and your $$, including for Amsoil. I personally run Valvoline 20/50 racing oil, change it every 2500 miles in the street car and after every DE weekend in the race car. NO leaks, no smoke, and the track car catch can is almost empty after a full weekend of 16 sessions.

lleroyb

I was always a fan of Valvoline until I switched to Mobil 1. I just want the best protection for the Porsche engine, oil is cheap, even synthetic, compared to a new engine.

Lou

LFA951

Amsoil Series 2000 Racing oil 20W50, perfect for 951, worth every penny of the $10 quarts, the oil is red like transmission fluid, but smells like a detergent, awesome!

420WHP944

well guys, after reading the results of the magazine test that jet951 posted I think the royal purple oil speaks for itself....I was shocked to see just how bad the mobil 1 performed, I certainly wouldnt pay the premium for mobil 1 when its only mediocre oil..

reno808

Ski i took your advice. i just went to autozone and got Valvoline 20/50 racing oil. U better be right. LOLOL..

Antonio

I'm an ex Mobil1 users and I agree with others that quality seems to have gone south in recent years. Besides, nowadays I go out of my way not use Mobil products for other reasons. I switched to Red Line and, yes, there is a difference. Pressure stays noticably higher after hot runs and I can actually see the oil level on the dipstick. BMW dealers sell Castrol synthetic 10-60 imported specifically for M engines. The price is very attractive and I'm thinking of giving it a try.

lleroyb

Thanks Anthony that is the kind of info I am looking for. Just last year I saw the Jaguar and Porsche teams at ALMS using Mobil 1. I can't help but think if there were better oils they would be using them. Or maybe they are being paid??? Who knows?

Lou

OriginalSterm

Is that the VR-1 oil?

ehall

They ARE BEING PAID, and Mobil is paying them.
Ypou might alspconsider AGIP Racing oil 10-60.

Turby

Redline 20-50