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850 / S70 & V70 '96-'99 / C70 '97-'05 General Forum for the 850 and P80-platform 70-series models |
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Hydraulic tappet snake oilViews : 1753 Replies : 25Users Viewing This Thread : |
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Sep 28th, 2020, 17:25 | #1 |
Grumpy Old Git
Last Online: Today 13:38
Join Date: Dec 2004
Location: South Yorkshire
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Hydraulic tappet snake oil
After much pulling of hair over the weekend, I have concluded that the noise that I am hearing in my T5 engine is mainly due to the tappets. The correct/best way to rectify that would be to pull the head and clean or replace them, however I really don't want to pull the head unless its for something far more serious!
So, with so many magic cure options out there, has anyone tried any of them, and if so what results did you get? These seem to be the main contenders - Wynn’s Hydraulic Valve Lifter Treatment Liqui Moly Hydraulic Lifter Additive Forte Top End Treatment Rislone Engine Treatment & Cleaner Marvel Mystery Oil I've also heard of adding ATF to the oil - again, does this actually work? Thanks
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Japanese import '96 850R - https://www.volvoforums.org.uk/showthread.php?t=312484 Ex Danish Embassy '96 940 GLE LPT - https://www.volvoforums.org.uk/showthread.php?t=326071 |
Sep 28th, 2020, 21:45 | #2 |
Premier Member
Last Online: Mar 24th, 2024 19:47
Join Date: Jun 2016
Location: S****horpe
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I've used the Wynns one before-although not on a Volvo,but don't see as that'd make a difference-and it was very good,I'd use it again if necessary.
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Sep 28th, 2020, 22:05 | #3 |
Member
Last Online: Apr 19th, 2023 21:16
Join Date: Jun 2016
Location: Scotland
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Have you tried different grades & types of engine oils? My dad's 2.5NA was quite noisy so topped up with 2L of fully synthetic and magically went silent (probably being 2L down didn't help.....)
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Current V70III 2.4D (163) SE Sport 4C (2008) V70 T5 (1996) V70 P2 D5 EUIII (2002) XC90 V8 4.4 (2007) |
Sep 29th, 2020, 22:05 | #4 |
Master Member
Last Online: Jan 19th, 2024 18:18
Join Date: Jun 2012
Location: Hell
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When I bought my 70R it had 152k on the clock and the oil hadn't been changed for 9500 miles (I don't care what Volvo say, it should never be more than 5k on these engines!).
The lifters were a little noisy, so I decided to put in thicker oil, with a high zinc content. That amounted to bog standard, 15/40 mineral (non-synthetic) and I change it every 2500 miles without fail. I don't hear a peep from the lifters... |
Oct 1st, 2020, 14:49 | #5 | |
Classic P80 1999 BiFuel
Last Online: Mar 6th, 2024 01:34
Join Date: Aug 2012
Location: 48mph Middle Lane M4
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They're all much of a muchness. I use Lucas Oil Stablizer (their Z) in a tired 1960s classic. Do about 4-5000 a year with it, and it works. Is it right, is it a good thing? Nope, and I'm sorry no snake-oil is going to make-up for lack of metal. But it solders on. Be clear, it's a bodge, these snake-oils all do the same thing in the same dubious way. What else did you want us to hear? I can say, Lucas Oil Stablizer does seen to stop oil wobbling, which is good.
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Bifuel V70 Classic 1999 [The Old Grumpy in the Corner, "When I was a lad... blah, bl**dy blah."] Last edited by CNGBiFuel; Oct 1st, 2020 at 15:03. |
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Oct 1st, 2020, 15:16 | #6 |
Premier Member
Last Online: Mar 26th, 2024 19:59
Join Date: Feb 2012
Location: Preston
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I used wynns in my old P2 D5 which was very tappety when I bought it.
Added the cleaner after an oil change and the tappet noise actually increased over a couple of thousand miles before going quiet. I suspect as the gunk was very slowly being flushed out of the tappet (sure it was just one on mine) increasing the gap before the oil way was cleared allowing it to perform properly again. |
Oct 1st, 2020, 15:23 | #7 |
Grumpy Old Git
Last Online: Today 13:38
Join Date: Dec 2004
Location: South Yorkshire
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Thanks everyone.
I've ordered some of the Wynn's stuff for now, just to see if it does make a (marginal) difference. I'm pretty sure my tappet noise is due to the POs lack of servicing - its pretty nasty in that engine, judging by what I can see through the oil filler The garage that I bought it off did an oil change before I got it, so I didn't get to see what it was like, but I suspect it was... well overdue! Hopefully, some decent cleaning agents will break down the sludge and allow the tappets to operate correctly again. I'll report back after I've done a few 1000 miles. Thanks again
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Japanese import '96 850R - https://www.volvoforums.org.uk/showthread.php?t=312484 Ex Danish Embassy '96 940 GLE LPT - https://www.volvoforums.org.uk/showthread.php?t=326071 |
Oct 1st, 2020, 16:46 | #8 |
Senior Member
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As a rule diesel specific engine oils carry a lot more detergent agents in them, might be worth doing an oil change with diesel oil, running it for a few thou then dropping it again.
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Oct 2nd, 2020, 00:29 | #9 | |
Master Member
Last Online: Jan 19th, 2024 18:18
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Respectfully... utter rot: And here's proof... proper oil analysis at 28,000. You're wasting money. The PCV clogs for others reasons I've covered. Get your oil labb'ed and see for yourself. You'll spend less on a lab than you're spending on oil.[/QUOTE] Last edited by sdg1970; Oct 2nd, 2020 at 00:33. |
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Oct 2nd, 2020, 00:45 | #10 | |
Master Member
Last Online: Jan 19th, 2024 18:18
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