Hey.

Curious - how was that 21K accrued? Many short trips over 10 years, or a few long drives with lots of downtime?

They ain't nuffin' like a passel o' short trips (never fully warmed up, fer long enough) to promote accumulation of unwanted deposits and spooge.

Befer ye change, try several tankfuls of Techron-laced tier-1 fuel and go take some looong high-speed drives on the freeway. Woon't hurt.

Frankly - in defense of SP-515's, given the extra bluing evident in side-side comparisons to SP-507 and previous gens, it's possible (even likely) they are the strongest 'crimped' 2-piece iteration available. No question that they are excellent plugs drivability-wise.

Best o' luck!

 

Hey Bud,

This first two years I owned it I used it as a daily driver, in that time I put about 12,000 miles on her, both mix of short and long trips. Last 8 years and 11,000 miles it's been used only about twice a week for no more than approx 25 miles a week. But sometimes it's used more for like say a 50 mile trip max, some times it's not used for a couple weeks. I always start it few times a week tho..

I already started using Techron and will until my plug change since I don't use it that much and i wont go through many tanks. When I get closer to the change I'll take her on a nice long trip somewhere. And I'm going to go with the 515's anyway...

 

Roger that.

BTW - "I always start it few times a week tho.." .. don't do that. Idling just adds to the problem - to properly warm an engine, it needs to be under load ( driven). Idling = low cylinder pressures = poor ring sealing = lotsa blowby = oil contamination = bad juju. Better to just hook it to a batt maintainer. Put some Stabil in the gas. Or that fayncy new 'Prevention' elixir from Stabil.

MGD

 

Hmm that doesn't sound too good.. More use and less idling it is then . I've never used Stabil in my truck, just my mower, snow blower and bike. And it's connected to a Battery Tender Plus 24/7, all my vehicles are.

Ty for the tips my friend

 

Good vidya:
MGD