Greetings…I have a 2009 Chrysler TC with 117000 miles, a4.0/V6. From day one, I’ve changed the oil every 5000 miles…10W30. Recently, I went to the dealer for an oil change and they put 5W30 in it. I asked why! They said it was because of the age and high mileage of the van. What do you say? T…

Many believe that oil ports wear and grow, piston rings wear, and seals deteriate after a vehicle climbs up in miles. They put a heavier weight oil in to compensate for engine wear. I understand the theory, but I personally like to stick to manufacturer recommendation. Either way it doesn’t hurt.

5W30 oil is thinner oil, when cold, than 10W30. Your dealer’s rationale is backwards. Normally you would switch FROM 5W30 TO 10W30 when the engine is older. Not the other way 'round. It isn’t a problem either way as the others have indicated.

[image] Purebred: What was Chrysler specified oil? In owners manual and on oil cap. Use what they say - probably 5W20, which is what my 2007 T&C uses.

Here’s what the Owner’s Manual states for the 4.0L engine- Engine Oil Viscosity (SAE Grade) — 4.0L Gasoline Engines SAE 10W-30 engine oil is preferred for all operating temperatures. Your engine oil filler cap also shows the recommended engine oil viscosity for your vehicle. It’s probably no…

[image] TwinTurbo: I would go back and point out the Owner’s Manual and oil cap designation and tell them to re-do the oil change at their expense. … assuming that they even stock 10w-30 at this point. It is entirely possible that 5w-30 is all they keep on hand nowadays.

The only difference between the two oils is, the 5W-30 oil lubes the engine quicker during cold starts. I wouldn’t worry about it. Tester

Same here, I wouldn’t worry about it.

[image] TwinTurbo: It’s probably not going to do any harm in 5k miles to leave that in there until the next change. However, if it were me, I would go back and point out the Owner’s Manual and oil cap designation and tell them to re-do the oil change at their expense Hehe :slight_smile: If t…

My 09 calls for 5-30. Older cars often called for 10-30. I guess I would go with the manual but nothing wrong with 5-30, especially on a cold day in Minnesota.

2009 Chrysler Town & Country - Oil Question

Maintenance/Repairs

Purebred June 20, 2019, 10:25am 3

What was Chrysler specified oil? By 2009 most mfg. specified 5W-30 or 5w-20, both for gas mileage and immediate lubrication. Rather than the 10W-30 you had previously used. But as tcmichnorth stated either way it should not hurt.

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2009 Chrysler Town & Country - Oil Question

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