Ever since I've been running Mobil 1 15w-50 the smoke on start up has gone down and down and now it hasnt smoked on startup for 2 months just by changing the oil. Is mobil 1 15w-50 thicker or thinner then normal 10w-30?

 

I remember Glenn talking about the same thing after he switched to M1 also.

The old *rumor* was that M1 would swell rubber a bit, but I really don't know.

Doesn't sound like a problem you want to work on though..

 

Mkos,

I'm happy to hear that your smoking habit has decreased. I've been using "phony" oil in my TA since it had about 18,000 miles on it. I've tried 10W30 Mobil 1 and 15W50 Mobil 1. It now has 46,000 miles and still smokes a bit on startup. It did it with either oil in the case, and always has. I think I'd be disappointed if it didn't do it someday.

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Later,
Vader
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"Fear is how I fall, Confusing what is real..."
Adobe Acrobat Reader

 

I thought it was good when my car stopped smoking, but it turned out that I had just burned all of the oil My LG4 is invincible...

 

I hear ya Vader. My car blows a good cloud on startup, too. If ever it didnt, I'd probably wonder what the hell was wrong with my engine... :P

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1983 Firebird
TH700R4 Auto
Small Block 400
LG4 ECM, Intake, Carb, Distributor, etc.
Soon to be non-computer.
Clarion Head Unit 45X4
2 Pioneer 400W 12" Subs
Third Gen Performance
"A four cylinder is half an engine."

 

So I guess the lesson to learn here is that if it stops smoking at startup, you better check your oil because chances are, you don't have any:-)

 

End result is higher number means thicker oil.

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91 Z28 Camaro
305 TPI
Flowmaster 3" exhaust
700R4 with 2000 Stall and shift kit 3.42 rearend
One sweet sounding system

 

i feel the same way, if my car didnt smoke on startup i would have a heart attack.