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Zinc and later model engines? #980225 04/25/11 01:05 PM 04/25/11 01:05 PM
Joined: Jan 2003 Posts: 2,648 USA M max OP super gas
max OP super gas M Joined: Jan 2003 Posts: 2,648 USA	I know the later model engines don't need zinc in the oil but would it help increase gas milage or hp if it was added to a later model engine?

Re: Zinc and later model engines? [Re: max] #980226 04/25/11 01:10 PM 04/25/11 01:10 PM
Joined: Jan 2003 Posts: 32,947 Grand Prairie,Texas stumpy I Win
stumpy I Win Joined: Jan 2003 Posts: 32,947 Grand Prairie,Texas	I wouldn't think so.

Re: Zinc and later model engines? [Re: stumpy] #980227 04/25/11 01:49 PM 04/25/11 01:49 PM
Joined: Oct 2003 Posts: 21,345 Marysville, O-H-I-O 70Cuda383 Too Many Posts
70Cuda383 Too Many Posts Joined: Oct 2003 Posts: 21,345 Marysville, O-H-I-O	um. no. they took it out of oil because late model engines don't need it. or, rather...they discovered the zinc was plugging up cat converters, and they were forced to re-design the engines to not need zinc, in order to meet fed. emissions laws. so, if you run high zinc oil in a late model engine...you're running the risk of plugging up your cat. you'd get better mileage from running a lightweight synthetic oil that flows better. I'd go that route before I put high zinc oil into a modern, non-performance, EFI, emissions controlled vehicle--especially since late model stuff is built to much closer tolerances than the old school stuff, and they can get away with lighter viscosity oils. Photobucket sucks

Re: Zinc and later model engines? [Re: max] #980228 04/25/11 06:33 PM 04/25/11 06:33 PM
Joined: Apr 2008 Posts: 1,285 Pacific NW USA CompSyn pro stock
CompSyn pro stock Joined: Apr 2008 Posts: 1,285 Pacific NW USA	Quote: I know the later model engines don't need zinc in the oil but would it help increase gas milage or hp if it was added to a later model engine? Zinc is still used in modern day API (SN) rated motor oils, just not to the extent it was used in the past. Engines still need anti-wear additives, formulators are just utilizing other combinations of anti-wear additives and better base oils to take the place of the reduced levels of ZDDP. For example: Zinc is still at the 800-to-900ppm range and Phosphorus is in the 600-to-800ppm range. They're also using Molybdenum and Titanium to name a few of the ways anti-wear supplementation is being achieved today. Zinc and Phosphorus is only a small snap shot of the overall performance characteristics of modern day motor oils.

Re: Zinc and later model engines? [Re: CompSyn] #980229 04/28/11 02:54 PM 04/28/11 02:54 PM
Joined: Jan 2003 Posts: 2,648 USA M max OP super gas
max OP super gas M Joined: Jan 2003 Posts: 2,648 USA	Thanks guys for the replies and answers.

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