Oil Type
Comments
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FYI
Just a Summary, A lot has been mentioned lately regarding EPA/DEP mandating the removal of wear additives from all Motor Oil, primarily Zinc, that allegedly is causing premature wear on cams & lifters, especially on fresh rebuilt motors.
The articles I read indicate that until a Refinery comes out with an Oil specifically for 'Classic cars' a person should use a single grade (30Wt)Diesel Oil.(If drive in both cold & hot climate use 15-40wt). I understand that Castroil is due out with a Pre 70's and pre 60's oil... (Other Companies will probably follow given the Classic Owners...
Until then they 'Engineers' recommend Shell Rotella T & Chevron , or buy a Zinc additive, or use Racing oil.....0 -
I've just gone thru this oil thing with a Flathead Cadillac.
They tested an old caddy flathead with the new oils running it continuously on a bench and the engine wore out the idler gear at only 6000 miles. after changing the oil back to the old style oil (without the additives taken out) they ran it 60000 miles and the new idler gear had next to zero wear.
The solution I use is to get the GM EOS engine break in oil from the dealer, it's like assembly lube but oily and protects the engine. Half a can of EOS mixed with 30 wieght is what I use in all my old engines now.
ironman0 -
OK, I give up ... where's there an idler gear on a flathead Caddy engine? Timing chain tensioner?0
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Seems strange to me that only one part in the whole engine would give out. I would wager that it was dodgy to start with. It's like the old fashioned "Cords" rings, (if anyone remembers them). They were a segmented ring which sealed up aganist the top and bottom of the ring groove, as well as exerting outward pressure on the cylinder walls. Were marvellous at preventing oil consumption on an engine that was worn out. But invariably, when the engine did finally clap out, it was the rings that got the blame, not that it was shot to start with.
Geoff.0 -
To follow up on "Ironman" , the GM additive "EOS" has been discontinued and is no longer avaible, I know I work for a GM dealer.
The reccomendation I have is special oils for older model cars are avaible thru Castrol and Valvolene Max Life.
Best idea to check these compainies web sites,
It previously noted Diesel oils would work but they have now been reformulated. Also noted STP has zinc in it.
Of interest Hudson was planning on all this as the 29 Super Six has roller lifters!0 -
The idler gear is a bronze gear that runs the distributor and oil pump and is connected powered by the cam gear.0
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Ever wonder why modern engines run so long without problems? OIL, BABY,OIL. They still use iron blocks and aluminum pistons in most engines, just like our HUDSON products. I hve always used 10w/30w high detergent oil in my Model T, and other old cars. Non detergent will only gum your engine up.0
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I am with tombia on this issue. My engine uses the 10w/30w just like the new cars that I drive. But, my engine is a rebuild and not an original.0
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I use 10w/30w in my Hornet engine its original. Runs great. If you look through old posts on this site every 4-6 months this same question comes up and all the same answers appear. Also the distributor gear is not an idler gear. The distributor gear direct connects to the cam shaft gear and idler gear by definition is a gear between two other gears.
A bronze gear directly coupled to a cam shaft gear will not wear out at 6000 miles with normal everyday motor oil. Just will not happen as just about every oil on the market today has superior friction protection to old oils. The addition of high zinc content to this mix would do nothing. In fact Randy Maas sells bronze distributor gears for Hudsons I have one in my Hornet. I replaced the original factory gear that was worn due to inferior manufacture a problem Hudson identified and remedied by changing to bronze gears. So I am with Geoff if that part failed it was faulty.0 -
Always used current 10-30 oils in all my Hudsons with no problems, no wear ect. Remember all the stories about unleaded fuel ruining your vintage engines when it first came out?0
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There is a guy in Dayton Ohio that make an oil for old classics. It has a high zinc content. Was thinking about trying it and see what happens.
Jim0 -
The Brad Penn oil company (working out of the old Kendall oil refinery in Pennsylvania) makes a couple lines of oil that's said to have the original levels of zinc. Here is their website: http://www.amref.com/bp_product_pgs/BPengoils.htm
The two lines are "Premium Penn-Grade" and "Penn-Grade 1 Racing Oil", each available in different viscosities. In general, this oil is only available from specialty dealers but you can find out from the factory who sells it in your area. Or, like one of our local Hudsonites (who swears by it) you can order it by the carton.0
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