On Sat, 24 Nov 2007 04:43:49 -0800 (PST), Doc <docsavage20@[EMAIL PROTECTED]
>
wrote:
>There seem to be two camps. I've seen those that advocate stomping on
>the engine to high revs and backing off in the initial break-in
>because of some alleged benefit.
>
>Then there's a more traditional school of thought, such as this post:
>
>
>http://groups.google.com/group/alt.autos.toyota/msg/fbdecfe9b55b6830?dmode=source
>
>Both claim scientific reasons for their method. It seems the "flog
>the engine" guys say to change the oil soon after an initial run
>period of say 20 miles to get rid of initial metal particles, the
>above quoted appears to say those metal particles are beneficial.
>
>Any thoughts? Real world tests of engines broken in one way vs another?
When in doubt, the procedures in the owners manual take precedence.
That said, I *still* think that you need to be overall gentle on the
car for the first 1,000 miles or so, and vary speeds deliberately on
the freeway rather than nail the Cruise Control at 70 and stay there.
If you need to stand on the gas for accident avoidance feel free, just
don't do a drag strip launch at every green light.
And even though they keep insisting it isn't necessary, do the first
oil and filter change early, say 1,000 miles. They may not be using
straight-30 non-detergent "break in oil" anymore, but the engine is
still going to spit out more friction products as the final bedding in
process happens.
And don't switch to synthetic oil till you have enough mileage to
determine the rings are bedded in and it isn't burning oil - 5,000
miles minimum.
--<< Bruce >>--
|
