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Oct 14, 2005 | 04:08 PM

grbr95

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Purebase

Is Pennzoils purebase something super special? Castrol and Valvoline don't have a purebase conventional do they? And from what I hear, Val and GTX never cause sludge problems when used properly.
I never hear anyone say anything about Pennzoil here and wonder why.

Oct 14, 2005 | 04:11 PM

ford390gashog

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From: Brentwood,CA

well the "sludge" problems were in the 80's with most oils it is old news. it does not even apply anymore. sludge is a by product of driving habits. you won't get sludge if the oil is always brought up to temp and there is no water in the oil. with that said purebase is a GP II/II+ it is just like the chevron ISOSYN which is where shell got the idea.

Oct 14, 2005 | 04:14 PM

grbr95

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Based on that, and the fact that I use conventional oil. Do you think that switching from Castrol GTX to Pennzoil would be a good decision?

Oct 14, 2005 | 04:50 PM

ford390gashog

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yes it would be a good decision. that or the havoline/chevron.

Oct 14, 2005 | 05:19 PM

Big O Dave

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Quote:

Originally Posted by ford390gashog

...sludge is a by product of driving habits. you won't get sludge if the oil is always brought up to temp and there is no water in the oil. with that said purebase is a GP II/II+ it is just like the chevron ISOSYN which is where shell got the idea.

Don't forget engine design and OCI intervals as additional modern-day causes of sludge...

Oct 14, 2005 | 05:46 PM

ford390gashog

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yeah good point. like those stupid 15k bmw oci's that always shows tons of sludge. you would have to be crazy to do a 15k oci .

Oct 14, 2005 | 08:02 PM

horsepuller

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From: Southern California

Purebase is Pennzoil's trade name for their hydro-treated base stock. It allows them to make high V.I. base stock for Group II, III lubricants.

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Oct 14, 2005 | 08:10 PM

mrxlh

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From: Bossier City, LA

Time to switch mechanics then.

Ryan

Oct 14, 2005 | 11:49 PM

#10

BrianA

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From: Trussville, Alabama

Ditto.

My $.02: he's just flat wrong.

Oct 15, 2005 | 12:19 AM

#11

ford390gashog

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From: Brentwood,CA

I don't know, my mechanic still warns me and says that Valvoline, Havoline and Castrol GTX are the only three dino's worth a crap.

why listen to him? just make your own decisions.