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Mar 9, 2009 | 08:42 AM

ncdan

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oil question

I have a 2000 super glide with 40000 miles. The last owner switched to AMS oil several changes ago. I am considering changing to castrol 20-50, its less expensive and simpler to get. Can anyone offer a reserched openion. Thanks for any help.

Mar 9, 2009 | 08:48 AM

archergodwin

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Joined: Sep 2008

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From: Northwest

Go with a name brand synthetic of the correct viscosity, and you'll be fine. Everybody here has their favorite brand of oil, so you'll get a bunch of different opinions.

Mar 9, 2009 | 09:22 AM

FUQUA

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Joined: Nov 2008

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From: Tega Cay Sc.

I use this it's the ****!!!!!!!http://www.renegadepro1.com/racing_lubricants.html

Mar 9, 2009 | 10:43 AM

rounder

Ultimate HDF Member

Joined: Oct 2007

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From: Palm Harbor fl.

should be just fine with the castrol... Synthetics do have the advantage of running a little cooler and not breaking down as easily if the temp. of the oil climbs beyond a certain point.

Last edited by rounder; Mar 9, 2009 at 10:51 AM.

Mar 9, 2009 | 11:07 AM

madden23

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Joined: Apr 2007

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From: Pacific Northwest

I used Castrol GTX 20 50 for years in bikes, now I use their 20 50 Syn blend, 3.79 a quart(similiar to Harley Syn 3) As long as the oil has the same or better specs than syn 3 it's fine IMO.

Mar 9, 2009 | 11:10 AM

KBFXDLI

Big Kahuna HDF Member

Joined: Feb 2006

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From: USA

Quote:

Originally Posted by ncdan

Yes, you get what you pay for. Amsoil is WAY better than Castrol in a Harley Air cooled engine. In a car engine not much because it's water cooled. But I would stick with Amsoil or Mobil1Vtwin 20w50 from autozone. But put 75w90 gear oil in your trans.

Mar 9, 2009 | 04:03 PM

ncdan

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thanks KB, but why not the amns in the tranny?

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Mar 9, 2009 | 04:47 PM

bigVtwin88

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Joined: Jun 2007

Posts: 292

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From: New Philadelphia, OH

Never used Amsoil in my bike but we use it at work in all our trucks. Good stuff... a little pricey, but worth the money IMO. We rebuilt a 350 truck motor a year or two ago that had been running amsoil for several thousand miles and I gotta say, I've never seen the inside of an engine that clean.

Mar 9, 2009 | 07:28 PM

#10

seniorsuperglideE8

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Joined: Jan 2007

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From: along the shore of Mishigami

I've used M1 V-twin 20w50 with real good results, my cyl. pistons and lifters looked real good after 33k mileson my 02. 02 FXD and 05 FXDLI both have it.