2002 Mazda Protege Oil change

GARDINERLAWSON

MEMBER
2002 MAZDA PROTEGE
4 CYL
2WD
MANUAL
90,000 MILES

Just did an oil change, couldn't find info on how much oil to put back in and the lighting was so poor so couldn't see very well on the dip stick. I think I put in 5L. Car is away from me for the next three months and will only be driven lightly. Is it an issue to let her drive, even lightly, with too much oil in the system? Awkward. Regards
J

4 Replies

MHPAUTOS

MECHANIC
31,937 POSTS

Hi there,

These engines take aprox 3.5 litres, so the 5 + is a bit to muck to leave in, I would try to get someone to drop some of the oil out of the car.

Mark (mhpautos)

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Friday, January 4th, 2008 AT 6:31 AM

GARDINERLAWSON

MEMBER
3 POSTS

Thanks will try and get that done asap. I am interested to know what negative effects too much oil in the system may incur?
Regards
J

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Friday, January 4th, 2008 AT 5:22 PM

MHPAUTOS

MECHANIC
31,937 POSTS

If you over fill the engine with oil, (depending on how much extra) you can increase crankcase pressure and blow out seals, if extreme you can break crankshafts s the shaft strikes oil, (i have seen this firsthand).

Mark (mhpautos)

P.S. Your over fill is minimal, I once had a car towed in because it wouldn't turn over, the owner changed the oil and said that they topped it up, up to the top of the oil filler. Now that was an extreme oil change!

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Friday, January 4th, 2008 AT 11:24 PM

GARDINERLAWSON

MEMBER
3 POSTS

Thanks, I assumed overfill would induce a pressure increase in the system ths putting seal at risk. Interesting concerning the potential for crank shaft damage. I see now how ths could occur. I wish the oil capacity was specifies in the owners manual!
Regards
J

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Friday, January 4th, 2008 AT 11:50 PM