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Old 09-02-2017, 06:43 PM
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oogles72's Avatar
Join Date: Sep 2017
Posts: 8
Grinding cold start?

As cooler weather begins, I notice there is a dry grinding start to my 2010 JK. Only happens in cold weather, and it grinds worse as it gets colder and only upon start up.

Ive tried the more expensive spill-back valve on the oil filter, but it didn't work. should i change the weight of the oil from 5w20 to something different?

Can this damage the 100k mile engine long term? doesn't sound good, even if it's only for 1-2 seconds.

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Old 09-02-2017, 09:18 PM   #2
JTPhoto JK's Avatar
Join Date: Jun 2011
Location: Thunder Bay ON Canada
Posts: 5,119
Grinding cold start?

Yes change to 5W30 Amsoil XL. Worked for our Jeeps. Ours started the cold weather clack around 160,000 Klm .. Mine has almost 300,000klm now and start up is quiet.

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08 Black and Khaki JK Sahara Unlimited (GONE) My BRUTUS BUILD
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Old 09-03-2017, 11:06 AM   #3
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Join Date: Jun 2014
Location: Englewood, CO
Posts: 783
My 2010 does this. I'm pretty sure it's the starter not disengaging. It only does it when it's colder.
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engine , engine 4.0 , start up

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